The Forgotten Koshiro

Every piece written about Streets of Rage 2 begins with the music. That is understandable — the soundtrack is extraordinary, and its composer, Yuzo Koshiro, has given enough interviews over thirty years to make the story easy to tell. A Japanese prodigy raised on Tokyo nightclubs, FM synthesis pushed beyond reasonable expectation, a Mega Drive that somehow sounds like a warehouse rave. It is a good story. It is also only half the game.

The other half belongs to Ayano Koshiro, Yuzo’s older sister, who served as lead graphic designer and the person most responsible for the game’s combat feel, character identities, and enemy design. She designed every character. She defined how the combat worked in practice — specifying the timing, damage, and feel of every move in the game, from the basic jab to Max’s elbow chop to the arc of Blaze’s somersault kick. She considers Story of Thor her definitive work because Streets of Rage 2 was a Sega game, and she doesn’t feel she can fully claim it as her own. When Streets of Rage 2 is described — as it frequently is — as one of the finest console games of the 16-bit era, it is describing something substantially shaped by her work. Her name is in the credits. It rarely appears in retrospectives.

It’s Like Clothes

Ancient Corporation in 1992 was not a large studio. Ayano Koshiro estimated the permanent staff at four people: herself, Yuzo, one programmer, and one other. The full development team, including outside contractors, numbered around ten. The hours were extreme — she worked from ten in the morning until two or four at night, with a late-night snack at ten as the day’s single concession to rest. Her boyfriend at the time would come in the afternoons to help and often missed the last train home.

Into the Ancient office, at some point during pre-production, they installed an arcade cabinet. Street Fighter II. Ayano played Guile. Yuzo played Zangief. They went to game centres to play against each other — Yuzo would always ask Ayano to play Guile because that was the character he struggled against most. The beat ‘em up in 1992 was a genre that had mostly run on momentum: walk right, hit things, reach the end. Final Fight had set the template in 1989 and every console brawler since had been measured against it. From the SF2 sessions came a different design target: combat that flowed rather than mashed, with an internal logic to it. Two jabs, a straight punch, a heavy hit, and the enemy goes flying. That rhythm — light, light, medium, heavy — is still the spine of the game. It is also why the combat reads immediately to a player arriving with no history of it: the logic is in the feel, not the manual.

Ayano absorbed everything she was interested in and put it directly into her work. Fighting manga with a taste for physical consequence. The Contra series, whose stage-by-stage progression she credited as the model for how Streets of Rage 2 would build a sense of story through environment rather than dialogue. Whatever fashion was current: Skate’s character was originally going to have roller skates until she heard that rollerblades were the new thing, so the design changed. There was no internet. She bought magazines and cut out the relevant pages.

Asked in a 2024 interview about her design philosophy, she put it simply: it’s like clothes. If you find something you like, you just put it on.

"It's like clothes. If you find something you like, you just put it on."
— Ayano Koshiro

Sega Wouldn’t Give Her One More Week

The character roster was rebuilt around a logic of differentiation. Axel and Blaze returned, but Adam — the third playable character from the first game — was dropped. Ayano’s reasoning was direct: Adam had no real speciality. The sequel’s larger sprites and broader move ambitions demanded a cast with sharper identities, and Adam didn’t have one. His replacement was his younger brother Skate — fast, tricky, rewarding skilled play — and Max Thunder, a wrestler built around Yuzo’s personal preference. Yuzo loved throw-based characters. Max is that preference made playable: slow, punishing on connection, genuinely difficult to use well.

The moves came from the same iterative process that produced everything else. Ayano would write a rough specification — this attack does this much damage, moves like this, hits in this arc — and the team would code it immediately, gather around the screen, suggest adjustments, and test until the impact felt right.

The hit sounds were approached the same way. Ayano and Yuzo had been fond of a comedy duo whose physical routines involved exaggerated impact sounds. That particular quality — the satisfying, slightly absurd weight of contact — was what they were chasing. When the hit effects were finally right, she said, everything suddenly had substance behind it.

A prototype of the game has been documented by preservation researchers, and it suggests how far that iterative process had to travel. What exists of the early build points to a game still finding its feel — the responsiveness and precision of the final version something the team was clearly still working toward. The point is not the prototype’s specific contents, but what its existence implies: the tactile quality of the finished game was not settled on a design document. It was arrived at through exactly the process Ayano described.

She said later that this kind of development — everyone with a clear view of the whole product, making changes in real time and testing them immediately — is what leads to the best games. She contrasted it with modern production, where teams often work on isolated components without seeing how the pieces fit. Streets of Rage 2 is, among other things, a record of what happens when that loop works.

The enemy cast was built around movement first. Each enemy type began as a question about behaviour: how does this character approach, what makes them a distinct problem from the previous wave, what is the player going to have to work out to deal with them efficiently? Names came from wherever the staff felt like. Two enemies named Jack and Beano after a soybean candy everyone was eating. Staff names scattered through the enemy roster. The alien-stage enemies influenced by Baki and whatever manga was circulating in the office that week.

One structural change from the first game is worth understanding precisely. Streets of Rage’s special attack — a police car that carpet-bombed the whole screen — was gone. The reason was technical: the sequel used diagonal scrolling, and the old attack couldn’t survive the geometry change. In exchange, Ayano gave each character their own dedicated special. She considered this an improvement on its own terms: rather than a shared panic button that erased every problem, the sequel asked players to choose — to think about when to spend health on a special, and whose special suited the situation. Spectacle traded for expression. That trade is one reason the game still feels active rather than passive: every decision costs something, and the cost is always legible.

The development lasted roughly half a year. Towards the end, Ayano was deep in work on Shiva — the game’s imposing bodyguard character — specifically designing his sprite for a Versus mode she was determined to include. She needed one more week. Sega wouldn’t give it. The phone conversation became heated. She was crying on the call — not from sadness, she said, but from fury. She had put too much of herself into the game to let a deadline take something away from it at the last moment. The Versus mode Shiva was cut. The game went out without him.

She still talks about it.

Eight Stages, Four Characters, One Idea

What you are doing for the three to five hours Streets of Rage 2 takes to finish is learning, through repetition, how each of the four characters solves the same problems differently. Every enemy has a name — Barbon, Fog, Kusanagi, Souther — and a distinct behavioural signature. Galsias with knives charge directly at you with a deceptive hitbox that punishes hasty counters. Donovans knock you out of the air, making jumping attacks riskier than they look. Signals throw you if you let them close, which makes them far less dangerous once you know to break the approach early. Learning these patterns is most of the game — and each new stage introduces new ones.

Axel’s Grand Upper clears groups. Blaze’s somersault kick resets a flanking enemy. Max’s standing special empties a room when it connects, which it doesn’t always. Skate’s speed lets him thread gaps that nobody else can use. The game’s own manual described the system plainly: stationary specials drain health only when they connect; directed specials drain health on use regardless. That distinction — defensive tool versus offensive commitment — is what gives each character’s special a different strategic weight.

Take Axel’s basic combo. The first two hits are control — short range, low commitment, reading the enemy’s response. The third commits you forward. The fourth sends them flying, far enough that you decide in the moment whether to chase or hold position for what’s coming from the left. The game rewards players who find the next layer: a jump-jab to hold an enemy in place, chain into the basic combo, finish with the forward special. When you get it right — when a grabbed thug clears two others on the way down, or Blaze’s kick pops a ninja just far enough to give you breathing room — the satisfaction is physical, immediate, and entirely earned.

Where Final Fight locks you into committed animations that leave you briefly exposed, Streets of Rage 2 gives you room to course-correct. Where Golden Axe relies on spacing and a single special attack, this game builds around rhythm and character-specific toolkits. It is faster, more expressive, and considerably less forgiving of inattention — which is a large part of why it has aged differently from its contemporaries, remaining genuinely playable where others have become objects of nostalgia rather than practice.

The eight stages escalate without announcement. Streets give way to a bridge, an amusement park, a cargo ship, a jungle, a factory island. Each environment introduces new enemy types with new demands. Each boss requires a specific adjustment. The game waits for you to understand it, and when you do, it rewards the understanding precisely.

Two players changes everything. The constant micro-negotiation — who takes which enemy, who guards the left flank, who burns their special on the crowd that just spawned, who takes the food — runs underneath the action for the whole game. Space opens and closes differently with two people in it; enemies that are manageable alone become a genuine co-ordination problem. Streets of Rage 2 remains one of the best co-op games ever made not because it was designed to be easy together, but because the decisions it generates are interesting enough to keep two people talking through them.

The Night the Mega Drive Learned to Dance

Yuzo Koshiro’s relationship with electronic music started long before Streets of Rage. He was thirteen when he became a fan of Yellow Magic Orchestra — Japan’s pioneering electronic group — and his mother bought him a Korg Delta synthesiser to play along with. He taught himself to program sound on the PC-8801, the same home computer he would later use to compose the Streets of Rage soundtracks. The path from a teenager playing YMO covers to a composer making club music for a Mega Drive game is a straight line, even if it took a decade to travel.

The sounds Koshiro was aiming for — drum machines, basslines, the texture of early house and techno — were the backbone of what he was hearing at a club called Yellow in Tokyo in the early 1990s. He built his own sequencing tool and wrote the programming language it ran on himself, working from a PC-8801 he already owned rather than the expensive official Mega Drive development kit. It was the rational choice for an independent composer who needed direct, low-level control. Hard electronic styles, ground beat, techno beginning its mutation into something noisier and more extreme — he translated all of it through his modified home computer and sent it through Sega’s own conversion tools.

There is a particular irony in what followed. The music Koshiro made for Streets of Rage 2 was not especially popular in Japan at the time of release — club music of that kind didn’t take off there until the late 1990s, and Japanese players at the time preferred rock and jazz in their games. The audience that made the soundtrack famous was overwhelmingly Western: teenagers in the UK, France, and the United States who encountered house and techno for the first time through a Mega Drive cartridge. Koshiro has described the music explicitly as a message — he poured his heart into it so that Western players could feel how deeply he was inspired by the popular music of that moment. The soundtrack is not club music smuggled into a game. It is a deliberate cultural export, sent through Sega hardware to an audience he had never met.

Motohiro Kawashima, Koshiro’s collaborator, composed three tracks independently and co-wrote a fourth. His contributions — “Expander” on the factory stages, “Jungle Base” in the later levels — sit at a harder, more abrasive edge of the soundtrack: faster tempos, rawer synthesis, a sound closer to the aggressive end of early techno than to Koshiro’s warmer house influences. Where Koshiro’s tracks tend to open out, Kawashima’s feel compressed and urgent. The two registers don’t jar against each other — they map onto the game’s own tonal shift as the stages move from the lit streets of the opening to the industrial darkness of the endgame. The score was a conversation between two composers, and it sounds like one.

Her Name Was in the Credits

Streets of Rage 2 arrived in North America on December 15, 1992, and in Japan and Europe in January 1993. The reception was immediate and emphatic — perfect scores, chart-toppers in both the UK and Japan, reviews that described Yuzo Koshiro as the finest game composer working. The soundtrack’s reception was strong enough that Koshiro was invited to DJ nightclub sets using the tracks.

The version that arrived in American homes was not quite the game Ayano Koshiro had finished. The North American release removed a flying kick animation of Blaze’s that the Japanese and European versions retained, and Mr. X’s cigar — visible in the final stage of the Japanese version — was quietly excised from all Western releases. Small changes, but telling ones. The game that teenagers in Coventry and Columbus were playing had been lightly renegotiated on its way across the Pacific, its edges filed down by people who had never met Ayano Koshiro and had no interest in the Baki manga.

The cultural reach proved durable. In 2015, London label Data Discs pressed the soundtrack to vinyl as their inaugural release; a remastered edition followed in 2020, sourced from the original PC-88 files Koshiro provided himself. The score has been cited across electronic music and hip-hop — producer Just Blaze took his name directly from a character in the game.

Streets of Rage 4, released by Dotemu in 2020 after a twenty-six-year gap in the series, surpassed 2.5 million downloads across all platforms and brought both Koshiro and Kawashima back to contribute tracks. It is a direct argument that the original trilogy — SOR2 above all — had never stopped being the benchmark.

The twenty-six-year gap was not silence. In 2011, a Spanish developer named BomberLink released Streets of Rage Remake after eight years of volunteer development — a 100-stage, 19-character tribute to the entire trilogy built by more than twenty people. Sega issued a cease and desist eight days after release. It circulates freely to this day.

Ayano Koshiro was not involved. Sega had opted to develop Streets of Rage 3 internally; the decision hadn’t been hers, and the same pattern held for Streets of Rage 4. She still works at Ancient, primarily handling finances. Her eyes aren’t as good as they were — she can’t see the pixels the way she used to.

Her children, given a Mega Drive Mini a few years ago, chose to play Puyo Puyo.

Why It Still Works

Streets of Rage 2 takes three hours to finish and rewards a second playthrough with a different character more than almost any brawler made since. The difficulty is fair in the specific sense that when you die, you can almost always identify the mistake — a grab you didn’t break, an approach you misread, a special you spent too early. Nothing about the game is cheap. The systems are clear from the first stage and still revealing themselves in the fifth. A new player will reach the credits; a returning player with a different character will find a different game.

Streets of Rage 2 solved a problem that most brawlers never identified clearly enough to solve. The genre’s weakest tendency is a combat system that plateaus — the same punches, the same patterns, the same momentum carrying you through stages that are essentially identical problems restated with different sprites. Ayano Koshiro identified this precisely when asked about Streets of Rage 3: it lacks pace and rhythm, she said, and feels the same from start to finish. That observation retroactively defines what Streets of Rage 2 gets right: not just better combat, but cadence — contrast between stages, escalation through the campaign, each environment introducing new problems that demand genuine adjustment. The game doesn’t just get harder. It keeps changing.

It is short enough to finish in a single session and deep enough that a different character or a higher difficulty still reveals something new. The soundtrack plays through the whole experience without ever receding into background. Koshiro’s music doesn’t sit behind the action — it moves with it, calibrated to the tempo of the stages in ways that only become apparent when you play something else and notice what’s missing.

What Ayano and Yuzo Koshiro built in under a year, in a room with a Street Fighter II cabinet and roughly ten people, is still the game the genre measures itself against. Streets of Rage 4 was made by people who grew up with it. Every serious brawler released since 1992 has been in conversation with it, consciously or not.

Streets of Rage 2 is a fantasy of American urban life seen through the eyes of two Japanese siblings in their early twenties who absorbed everything they loved and put it directly on screen. Ayano considers Story of Thor her real masterpiece. She is probably right to — it is more fully hers, and she knows it. But Streets of Rage 2 is the game that reached the widest audience, set the standard for the console brawler, and launched a soundtrack that outlived its platform by three decades.

History remembers the music first. It shouldn't.

The game endures because its combat still holds — because the feel of it, the decisions it generates, the clarity of its character design, were built with the same care and specificity as the soundtrack that tends to get all the credit. That work has a name. It is Ayano Koshiro.