My First First Love 1 (2019) - 첫사랑은 처음이라서
Due to various personal reasons, a group of Yoon Tae-oh's friends moves into his house, where they experience love, friendship, and everything in between. The five friends are Tae Oh, Song Yi, Do Hyun, Ga-Rin and Hoon.
Tae Oh and Song Yi have been friends since they were very little. Do Hyun is Tae Oh’s friend. Song Yi and Do Hyun have feelings for each other.