Taehyun is a kind but cold friend. It is difficult for him to show love and care openly, so he only grumbles frequently.

It is because of his aloofness that he notices your hanahaki too late. Hanahaki is a disease in which an unrequited lover coughs up flower buds, eventually suffocating from the bud in the larynx. And so you, straining yourself, cough up a bud into the sink, and Taehyun notices it.