How about we stay just friends?

Summary

Haeun’s longtime male friend, Dojun, strangely enough, has never had a girlfriend. Sure, he’s a bit quiet, timid, and gloomy… but with a good body and a decent face, why has he never dated anyone? Out of curiosity, Haeun persistently questions Dojun—until she learns the unexpected reason. Apparently… every time he tries to have sex, he can’t get it up! Her friend is the very definition of what people call an impotent man?! Determined to help him out herself, Haeun decides to take matters into her own hands. But what begins as an innocent “lesson” to help Dojun soon starts to move in an unexpected direction… “Yoon Dojun, can I be the one to take your virginity?”