Kindness is a Disease

From Pocket Comics: Jinyoung, Sejeong, and Jooyoung were the best of friends. The three thought their friendship would last forever, but each of them started to develop feelings for another in the trio. Cracks start developing, and as a result, Jooyoung leaves them. In comes Sangwoo, who fills up the space she left behind. But all three seem to be keeping a secret from each other… What could their secrets be?

From INKR: Sangwoo — a rich high school boy, meets Jinyeong and quickly deepens a new friendship
Sangwoo's friend starts to warn him to stay away from Jinyeong and that Jinyeong is using him
Sangwoo tries to find out more about Jinyeong’s hidden story with Jooyeoung — their dead classmate!