In the world of this story, the gender ratio changed 500 years ago due to ``God's punishment,'' and the society has continued to exist as a female-dominated society. Descendants of cloned humans entrust their future to the protagonist in a bid to survive. A boy is reincarnated into a world of only women. It's a parallel future world. 1% are men. The protagonist of the apocalypse world takes on the challenge. The main character challenges the world's crises by singing. This story is a human drama.This work centers on the process by which abused children grow emotionally and become happy after being reincarnated from his previous life where he was abused. As a result, many scenes of ordinary daily life are depicted.  Japanese novel. There may be translation errors. This story begins with his reincarnation from Japan. The cover photo is of sunrise over Tokyo Bay.