Hisato is a temporary homeroom teacher in a wealthy all-girls-school that recently got co-ed. He spends his time brooding over how his life turned this boring until... The new transfer student accidentally kills him, then revives him and tells him that she is actually a shinigami (god of death) candidate... And that's only the beginning of his not-so-boring-anymore life...

Flyable CandyHeart features the full cast of the original game as well as cameos from Nanatsuiro★Drops, Alice♥Parade, Peace@Pieces and Kiminago. There are individual spin-off routes for each of the six FH heroines, the new routes for Yui and Suzuno are the final pieces to the multiple route mystery of the original game. FCH also features three bonus routes; one for everyone's favorite student council secretary Gumi-chan, one in which Shou has the opportunity to become even more intimate friends with Akira, and finally the mega crossover route.