パラレルパラダイス [Parallel Paradise]

Lynn Okamoto’s Parallel Paradise is a dark fantasy survival series from Kōdansha, running since 2017. When high school student Yota is pulled into a bizarre alternate world populated almost exclusively by women, he discovers that this strange realm’s survival depends on him—and that the price of failure is extinction. Known for its tense, adult-oriented twists and Okamoto’s signature blend of visceral horror and provocative themes, the series has become a notable entry in the isekai genre for its unflinching stakes.