Alternative:
異世界性活のススメ, The Recommended Lifestyle of a Different World, The Recommended Sexual Activity of a Different World
Synopsis:
Keitaro opened his front door one morning and suddenly transferred to a different world where demons and monsters live. Keitaro meets a young girl, Nia who is a half-demon. Nia urges Keitaro to “make a child” with her. Apparently, a half-demon woman can only have children with a human male…