Ever since he lost his family in an explosion, Mirai Kakehashi has lived a life of pain and despair. Every day, he endures abuse at the hands of relatives who took him in. As his anguish steadily chips away at his will to live, he is eventually pushed to the brink. Prepared to throw it all away, he stands on the edge of a precipice and takes the leap. However, instead of falling to his death, he enters a trance where he meets a winged being who claims to be his guardian angel. Named Nasse, the angel offers him two priceless abilities and convinces him to go on living.