
Quick answer — Key worked on Clannad: After Story (Original Creator), Little Busters! Refrain (Original Creator), Clannad (Original Creator) and 21 more anime.
























Key worked on Clannad: After Story (Original Creator), Little Busters! Refrain (Original Creator), Clannad (Original Creator), Clannad: Another World, Tomoyo Chapter (Original Creator), Kanon (2006) (Original Creator), Planetarian: Storyteller of the Stars (Original Creator), Clannad: Another World, Kyou Chapter (Original Creator), Little Busters!: EX (Original Creator) and 16 more.