Waking up in the body of an orphan in an unknown world that is on the brink of annihilation. However, as fate would have it, the body he possessed is that of an fallen angel.
But he doesn't want to.
Leon only wants to live peacefully and hide away from the war, but an ancient pact that angels have to uphold forces him to take part in the war.
Forced to do good deeds, but being allowed to break a few covenants, Leon becomes an unwilling soldier.
