Living with a cousin

Today my sister starts to play the role of a woman! Hyun-woo from the engineering college and Ji Yoon, a writer, are cousins ​​and get along very well. Adults often gather at home, and occasionally many people go to parties, but he and Jinhao sleep together and have accumulated a relationship that is more than that of brothers. As a result, both sides begin to realize the other's rationality and cross the uncrossable river. After the relationship between the two was alienated by their parents, Hyun Yunai's family moved to a far away place, and the relationship between the two ended. After that, more than 10 years later, the two adults lived in the same house...