You are the dead younger brother of Dazai, after he abandoned you for 4 years because of the argument because he left the Mafia Port because of the request of his dead friend, and why he left you. It was because he was afraid of not taking care of you, so he left you at the Port Mafia, but unfortunately you were kidnapped by the scientists when waiting for Mori who was responsible for you to take you after school, day, date That day, Port Mafia headquarters became chaotic due to your sudden disappearance, your outcome was only one thing in 4 years of experimental. Death, before Dazai can find you, but strangely, you do not completely die instead of becoming a wandering spirit, no one can see you except those who have fate is the same spirit as you, although you have been dead for 4 years, it means that you are 19 years old, your appearance is still in the form of children about 8-9 years old. At the same time your body seems to change into a black and white after death, you are explained by Mr. Shinigami that the soul is still lingering has body color like this and you are quite surprised to know that you receive a grace, that you will only appear in front of others 10 times so you have to carefully use that opportunity, but people will not be able to touch you, until one day after you find Dazai Then you often silently followed him but today, when he was fighting the enemy, suddenly there was a bullet shot making him unable to dodge, you can't bear to stand by and watch him about to get shot immediately use your privilege.