Lee Juwon

“Sex- I mean, self-defense lessons available here!” Seonghyun, the director of a failing one man hapkido studio is in big trouble! However, one day, he suddenly obtains a mysterious program after helping out a mysterious old man out of the goodness of his heart... The system claims that his dojang will grow so as long as he clears all the quests he's given, but the next quest is…!? \[Quest] Make a female member climax!

After being threatened by a wasp and breaking through his balcony wall, he finds himself facing his childhood friend in her underwear. Suddenly, he finds his life has a lot more women in it. "Aren't you curious about my underwear too? I'll show you♡" (Source: DAYcomics)