A reporter working for a weekly tabloid gets involved in a series of bizarre murders, where a red eye symbol is left behind on every victim.

As the vampire Zach nears the end of his search for his lost love, he finds himself looking upon an old house in the middle of a quiet Japanese town. In it reside 3 people—an old lady and her granddaughters. Despite sharing neither their lifespan nor their sense of values, he decides to live with them. And as time goes by, he learns what it means to be human, leafing through the stories in the life of the woman he holds dear. (Source: Kodansha, translated)

After quitting baseball because of a certain incident, Tetsuji has been spending his high school days listlessly until one day, his married elder sister suddenly returned home. She's 188cm tall and he's too scared to ask of her weight. Her name's Mao and her nickname is Maou a.k.a Demon King. Tetsu is also big-sized but he is timid unlike his sister who is huge in many ways, and they are about to spend an unexpectedly sad yet fiery summer holiday together.