Isekai Harem Monogatari

Storyline & Plot Overview

Naoki Oikawa, a 16-year-old boy addicted to masturbation, one day, while masturbating as usual, his pornographic magazine suddenly glows, and Naoki finds himself in a fantastical world. He appears among three female adventurers, who later introduce themselves as the swordsman Filia Shiora, the nun Tiane Rutheim, and the fairy Lluse.

They explain to Naoki that the world is in danger of destruction due to the resurrection of the Demon King, and the only way to save it is for him to use his special power—transferring his semen to the three girls to greatly increase their strength. Of course, the young hero agrees to join the group, and his erotic adventure begins.