Ho-Su harbors a desire to collect “crying faces” that match his taste. Hiding this fact, he maintains a precarious friendship with his roommate, Woo-Young. Then, one day, he finds himself witnessing an unexpected scene...
“The look on Woo-Young's face while he's doing XX...”
Was it an impulse, or a long-simmering desire? By the time he came to his senses, he had already crossed a line he shouldn’t have.
“Woo-Young... Can I film you crying?”(Source: Lezhin, translated)
— Description from AniList community (anilist.co).