starts with a boy that has a bad heart condition. He is stuck in the hospital, but the doctors daughter keeps him entertained here and there. You could tell they have a huge crush on eachother. And they confess their little hearts to each other. Soon after though he finds out that he is supposedly not supposed to be able to live past 20 years old.. So he tries to cut all ties with her and sends himself to boarding school for his high school. She ends up following him there though and for years she chances after him. In that time he keeps giving her mixed signals. He also lets a girl trick him into going out with her. As he breaks up with her though to go to mayu she ends up dying of a heart attacks she was an ass for making into his fault though. By the time he reached mayu it was too late and she was kissing another guy. Mayu in return ends up going out with that guy.. But it didn't last long. And for years after that she keeps her crush on Takuma. He again gives her mixed messages up until it is close to the time that he fears for his lifespan. Then he finally takes her more seriously.. But then he breaks off from her once again as his condition worsened.. Then when she goes on a date with her ex they get into an accident. With Takuma thinking that she is dead he breaks down. Just to find out she was not the woman that passed away. He finally realizes his feeling and they finally meet each other in the middle. A bit after that though her ex is having migrains. At this time he should have but didn't go to the hospital. As he finally moved on and got a new gf he suddenly collapses and his family was told he was brain dead because of a blood clot that grew in his brain from the accident. It was his heart that was going to go to Takuma for him to live.. But shortly after he denied having that kind of surgery as well as the family decided not to donate his heart.. A new type of heart operation came up with very high risk of death or cancer. But he decides to take it anyway. He also asks for mayu's hand in marriage and they get married. While he is in surgery he asked mayu to hold onto but don't look into a box that he gave her to old. She did though and in it was his will. It shows pictures of things he wanted to do and also what he wills her to do do he is dead. The end is of a picture of her and him happy with a family. It remains unknown If that was his last dream or reality.