A 16-year-old teenage boy named Tatsuki who wants to get into the family, even knowing that it is very unlikely given his age. His parents abandoned him when he was only 2 years old, and he doesn't remember them at all. A slightly shy, gentle and pleasant boy who is ashamed that he is no longer a child. It seems to him that he is to blame for growing up. Inside, he is very sad, desperate and lonely, but not at all embittered, just lost and a little scared.