Thorn by Lee Yeong-min

3.93

Jin-goo is tall and handsome. Sam-bong is short and ugly. The two go to the same university and live in a rooftop house in the country. One day, Jin-goo meets Se-ra who simply wants to be in his arms. She begs him to let her stay with him for a week as she has no where to go and the three of them live together.