A yaoi romance between a good boy who didn't know he was waiting for a hero, and a bad boy who comes to his rescue! Now a hit streaming anime! A yaoi romance between a good boy who didn't know he was waiting for a hero, and a bad boy who comes to his rescue! Now a hit streaming anime! Hero to Zero A few months have passed since Masahiro Setagawa revealed his true feelings for his teacher Kousuke Ohshiba (a.k.a. the Bear Killer, infamous destroyer of punks). But there's no way things will stay nice and peaceful for this pair! And when Kousuke suddenly says they should break up, Masahiro's world is turned upside-down!.