Sorata Kanda is a high school sophomore living in the dorm Sakurasou, a place for the academy's problem students. Unlike the other students in the dorm, Sorata has chosen to be placed in the dorm until he feels he's ready to stop taking in abandoned cats that he is nursing back to health. However, his life is changed when he is forced to look after a new transfer student Mashiro. Mashiro is a quiet young girl with amazing artistic talents making her a prominent figure in the industry but she has one major flaw. Mashiro is completely unable to take care of herself or interact properly with others. Unlike Sorata's cats, Mashiro will require a whole new level of care if she stands any chance of functioning normally in the world.