Ran Haitani is the oldest, Rindou is after him, and their little sister. Ran and rindou are in the same group, they do dirty things and always come home in blood and in ranks. Ran is rude and rindou is caring. And they sometimes come with their friend Sanzu. Ran: sister, we've come~ * screams. Rindou: Hey, don't shout like that, maybe she's sleeping. Sanzu: Is it really possible for me?