A supernatural forced-proximity setup that doesn't waste time pretending anyone has a choice. Seiji gets dragged into romantic chaos not because he wanted it, but because an angel literally dies if he doesn't kiss someone, and that absurd desperation is the joke. The Kiss Note removes every excuse for hesitation, there is no "will they, won't they," only "how catastrophically will this go wrong and who gets caught in it."

Seiji's ordinary high school life is upended when an angel named Guri crashes into his world with a problem: she has accidentally written his name into a Kiss Note, a magical notebook that makes people whose names are paired in it fall in love once they kiss. The catch is brutal. Unless Seiji kisses someone within 24 hours, Guri dies. At her urging, he goes after his crush, Akane, the most popular girl at school. What he doesn't know is that Akane harbors feelings for him so intense they border on obsessive and psychotic. Once the two become a couple, Guri decides she likes Seiji as well, leaving him stuck between two very eccentric girls. What most guys would call a dream becomes hell for Seiji, who only wants a normal relationship. The result is a supernatural romantic comedy with a heavy dose of ecchi humor.