Twinkling Watermelon S01 E05 Se-gyeong Leaves the Country

"One's youth is like twinkling watermelons. It is just there to shine."

Eun-gyeol resolves to stop the accident that caused Yi-chan to become deaf and clings to him, vowing to teach him everything he needs to know. He even promises to gift him the band Yi-chan needs. However, the school festival is in one month, and the person Yi-chan is doing this for has left the country and isn't going to return.