On the way home from school one day Yuuji Kashima is stopped by a strange man, offering to give him a dice game with the special ability to make him closer to whomever he plays it with. And that couldn’t be closer to the truth! Deciding to try the game with his mother, things are about to go very, very wrong. But it won’t stop there, not when he has his sister to try the game with too. Things couldn’t get more sordid!