Yuji Adachi plays Kuro, a professional baseball team's mascot. It's a tough job, but he does his best because his favorite player and childhood hero, Shinichi Terashima, is on the team!! Even now that he's grown up, Yuji's feelings of adoration and admiration haven't changed... He's happy just to work alongside said star, but one day after a game, Shinichi calls out to Yuji while he's in his Kuro costume...! The always cool and quiet Shinichi just can't stay calm around Kuro. Then, without knowing that it's actually Yuji, Shinichi asks Kuro to touch him...! Yuji can't hold back his excitement at discovering a new side to Shinichi and starts a relationship with him... as Kuro...!