Blueming S01 E02 How to Survive as a Hunk

"Blooming in spring you color my world."

Cha Si Won narrates how he was teased for being chubby as a child and ridiculed for having a father who abandoned his family. He develops a sense of resentment towards Da Un for his natural charisma, but to his dismay, gets paired with him for every group activity. After a party, a drunk Cha Si Won blurts out his honest feelings to Da Un.