When a peculiar girl named Guri shows up at Seiji Aino's door, his life takes a romantic twist. Mistaking her plea for a kiss as a cry for love, Seiji locks lips with this cosplaying cupid who wields a Kiss Note, a notebook that can make any two people kiss by simply writing their names. Although their accidental kiss was inconsequential, Guri discloses that Seiji must find a partner soon or face dire consequences. In a bid to save himself, Seiji targets the popular and stunning Akane Hiyama, only to discover her possessive and violent tendencies towards him. Amidst the chaos, Guri links Seiji and Akane in the Kiss Note, sparing Seiji from harm. However, Guri's growing affection leads her to pair herself with them, complicating their lives further. To add to the chaos, this newfound trio must now act as temporary angels, aiding Guri in her matchmaking duties or risk facing hellish consequences. Stripped of normalcy, Seiji embarks on a matchmaking journey with these unusual companions at his side.