
Quick answer — Koushi Tachibana worked on Date A Live II: Kurumi Star Festival (Original Creator), Date A Live IV (Original Story), Date A Live V (Original Story) and 7 more anime.
Koushi Tachibana worked on Date A Live II: Kurumi Star Festival (Original Creator), Date A Live IV (Original Story), Date A Live V (Original Story), Date A Bullet: Dead or Bullet & Nightmare or Queen (Original Creator), Date A Bullet: Dead or Bullet & Nightmare or Queen (Original Creator), Date A Live: Date to Date (Original Creator), Date A Live III (Original Creator), Date A Live Mayuri Judgement (Original Creator) and 2 more.