Makoto Hirata was a pessimist who struggled to connect with people. His best relationship was with a childhood playmate, Mizuki.
One day, Makoto saw school playboy Hasegawa having sex with a girl classmate.
Discovering a kind of thrill in the act of watching, Makoto continued to spy on Hasegawa.
But, soon the cad moved in on all the girls Makoto knew and cared about… and finally the only one he could call a friend.