One of the Taiko Team's senoir members, Kojima Takuya (小嶋拓也) has been a relatively-active contributor to the series during the first two arcade generations, while also having several charting commissions to do on the side, most of the time being referred to as Ojima (オジマ).
The first mentions of this member was by the cryptic label "A Person in the Seat Behind Etou" (エトウの後ろの席の人), which at the time was the only hint/nickname to the true identity of Mata Saitama 2000's charter. Starting from that episode, Kojima Takuya was used to periodically reveal what the other notecharters were working into through his Twitter page, but a few months inside the Taiko HD arcade period he closed his Twitter account. Little else is known about this member to this date...
- DADDY MULK
- URBAN TRAIL
- Dual Moon
- URBAN FRAGMENTS
- Metal Hawk BGM1 (メタルホーク BGM1)
- DESERT STORM
- No Way Back
- SORA-I Earth Rise (SORA-I アースライズ)
- SORA-III Heliopause (SORA-III ヘリオポーズ)
- SORA-IV Bunpasong (SORA-IV ブンパソング)
- Total Eclipse 2035 (トータル・エクリプス 2035)
- Metal Police (めたるぽりす)
- Mata Saitama 2000 (またさいたま2000)