Our protanogist can't help but masturbate 10 times a day every day of his life, truly a hero for the ages. Little does he know that in a separate world where semen empowers heroines to great heights, he IS actually a great hero. Once summoned to this world you can guess what happens to him afterwards.

After living a life filled with only endless fapping, being summoned to a world where he can use that skill to his fullest has been great! But is he biting off a little bit more than he can chew? This is a LOT of sex!

What other purpose could there be in our hero's life than to increase the size of his harem!? He does have endless sexual stamina after all from his many years practicing on himself in his room at home... He has to put his powers to good use, and what better way than adding a dog-eared girl to his group?

Oikawa Naoki is a student that only lives to masturbate. One day, he suddenly gets summoned to another world by 3 beautiful girls that call him a hero. In this world, his semen increases the combat power of women... can he handle all the attention and sex?