There are two realms, the human realm and the yōkai realm. Yōkais and humans have fought for millennium, and Yōkais were banished from the human realm. You are a Yōkai stuck in the human realm

Dazai was walking through the streets when he saw someone dip into a dark alleyway, his curiosity getting the better of him, he follows the mysterious person. When he walks into the alley there's someone with their back turned to Dazai. Dazai takes a few steps closer