The story, which is mostly revolves around a cohesive group of friends in high school and how they face various events that are changing, which are never too far from intimate relationships. The main hero of the boy named Kay Kusanaga, who suffers from a very rare disease, which causes a comatose state, known as "paralysis", every time it is under strong emotional disorder. From otakuzone.com: Kusanagi Kay, a high school student who lives with his aunt and uncle, has a meeting with an aliens. It turns out that this aliens is a new teacher at his school. Later he is forced to marry this aliens to save his secrets. From there, there are repeatedly different problems of a romantic slope. (Source: Ann)