Upon reaching the train station to death, a dejected soul is informed that he is "lucky" and will have another chance at life though he does not want it.

Watched over by a neutral spirit named Purapura in the form of a little boy, the soul must figure out what his greatest sin and mistake was in his former life before his six-month time limit in Makoto's body runs out.

He discovers that a girl he fancies, Hiroka, sells sex to older men so she can have the clothes and things she wants.

However, when he befriends Saotome, a boy in his class who accepts outcasts such as him and treats them as equals, Makoto sees the joy in life for the first time.

Knowing that his brother will never get accepted to a public high school due to his bad grades and lack of interest, Mitsuru announces that he will postpone his college entrance exams in order to allow his parents to save some money so they can send Makoto to a private school.

Makoto refuses and tells his parents and brother that he has already chosen Tamegawa High (a public school he and Saotome agreed on earlier).