Isorou Tenshi: Hajimete no Chikyuu Seikatsu

Mitsuhiro, who works for a loan shark, hits a girl on his way home. With no sign of movement or pulse, it seems all is lost. But then she suddenly comes back to life and stays at Mitsuhiro's house! It seems the girl is not human, and it's her first time living on Earth. Mitsuhiro ends up teaching her about "human life"...