Story
Seo-Kyung, who has had a crush on his childhood friend Jae-Ha for a long time, has lived his life believing that this love would never be reciprocated. Consumed by jealousy toward Jae-Ha, who was kind to everyone, Seo-Kyung even pretended to dislike him. Then one day, he came across a post on an anonymous college forum. “Does anyone know the name of the guy working at the library starting at 1 PM on Fridays?
Synopsis via AniList (English).