In North America, the manga has been licensed for an English language release by Seven Seas Entertainment in August 2019.

Youta Tada is an ordinary high school student who holds deep feelings for his childhood friend.

Youta then wakes up and finds himself in an alternate world with castles, dragons and two colored moons in a purple sky.

Here he meets paladin girl Lumi and a three-legged bird named Genius and quickly learns that he got into a women-only world where he is the first man that appeared in centuries.

[9] In July 2020, the manga became one of seven titles to be removed from Books Kinokuniya in Australia for claims of promoting child pornography.