book I - Yellow Roses MC and Saeran are, to be blunt, fuck buddies. Saeran has no idea of MC's feelings for him, and is bewildered when MC suddenly starts coughing up flowers. book II - Pink Champagne Jumin is a Hanahaki victim to oblivious V. Saeran, who's still curious about MC's condition, goes to seek Jumin out and understand the real story of why MC almost died. book III - Blue Bruises V has created a thriving app for those who suffer from unrequited love, called Mystic Messenger. Rika's mental health is deteriorating and is causing V's intentions to slip from good. He decides to go after MC, who is unaware of the underworld that his friends live in.