The Spiritual Energy Revived and an Angel Fell from the Sky.

[Decisive Killing] + [Not the Holy Mother] + [Single Female Protagonist] + [Technology] + [Black Belly] + [Hand Rub System] The spiritual energy is revived, strange monsters are rampant, and strange phenomena are born. When I was 14 years old, a girl fell from the sky. She had a pair of snow-white wings. "Are you a fairy? Otherwise, why did you fall from the sky?"