One-sided Love

Yohan and Yena are lovers who love each other. And San is Yohan's best friend, he secretly has feelings for Yena, who in fact is his best friend's lover. Yohan knew that his friend had feelings for his girlfriend, but he remained silent as if he didn't know anything. Yohan and Yena don't know if San has a very rare disease, Hanahaki Disease. It is said that this disease will arise when the story of someone whose love is unrequited and when those whose love is never reciprocated will begin to experience a prolonged cough accompanied by vomiting flowers. Until death picks up San because his love was never reciprocated by Yena.