The summer Hikaru died... Hikaru was a cheerful, joking boy, a little sunshine in contrast to Yoshiki... His childhood friend, supposedly dead... but he came back... It's a strange thing, Yoshiki already realized... But you don't know and you're more confused than when your math teacher puts you in front of the blackboard.... You don't know what to do... And all that's left is to accept the new Hikaru... He is more possessive, his memories, and his body are Hikaru's 