Toshihiko Horiyama joined Capcom in 1993. His first assignment was contributing a single track to Mega Man X for the Super Nintendo. It was the password screen. The main composers had already shaped the game's sound — high-speed action wrapped in atmospheric depth. Horiyama was called in to fill a gap. In the credits, he was listed as Kirry. The alias would appear again in later projects, sometimes as Kirikiri or Krsk. The names changed, but the pattern did not.
Over the next decade he moved between franchises. He contributed tracks to Mega Man X3, working alongside other composers to expand what the series had started. Then came Onimusha: Warlords and Onimusha 2: Samurai's Destiny — larger productions demanding orchestral weight and the drama of feudal Japan rendered in sound. He was not the lead composer on these projects. He was the one who stepped in when someone else could not be there.
From 2004 onward he worked on the Mega Man Battle Network series, continuing his association with Capcom's blue hero across different formats. Then in 2007 came Apollo Justice: Ace Attorney. This time, he was the composer — his first full soundtrack role on a major franchise entry. The Ace Attorney series demands a specific sound: courtroom drama, sudden reversals, jazzy investigative themes, moments of tension broken by absurdity. Horiyama found it.
In later entries — Phoenix Wright: Ace Attorney – Dual Destinies and Spirit of Justice — he moved into the role of sound director, overseeing the music and audio design rather than composing every track himself. Sound direction is a different kind of work: shaping a team's output, setting a tonal standard, making sure every cue serves the case. He remained with the series through multiple installments, becoming one of the most consistent voices in its audio identity even as the series shifted platforms and expanded its narrative scope.
In a 2017 interview for the Gyakuten Saiban 15th Anniversary Encyclopedia, Horiyama spoke about his approach. He composes exclusively at his office desk. Home environments prove too distracting, he explained. He values direct collaboration with directors, actively proposing musical ideas rather than waiting for specific requests. When discussing his early work on Apollo Justice, he acknowledged being 'defiant' toward director Takumi initially and expressed regret about not better studying the complete existing soundtrack before composing. The self-reflection is precise, technical — the kind of assessment an engineer might make about a structural flaw.
For Gyakuten Saiban 5 and 6, Horiyama adjusted the music for the Nintendo 3DS's speaker limitations, creating automatic bass reduction when headphones were detected. He prioritized speaker output as the standard since most players used that method. It is a small detail, but it suggests something about how he approaches the work — not as inspiration that strikes when wandering, but as craft performed in a designated space, with intention and repetition.
Over thirty years at Capcom, Horiyama has contributed to games across multiple generations of hardware. He has worked on Mega Man, Onimusha, and Ace Attorney without being known as the singular voice of any of them. What he offers instead is the ability to step into a world already built and find the music it was missing — a skill not about self-expression but about listening to what the game needs and delivering it without fanfare.
The work he does is quiet work. He has never been the name on the marquee. He has been the one called when the regular composer was absent, and he has always found the sound that belonged. That is the shape of a career — not defined by ownership, but by the willingness to fill in wherever the gap appears.