One day Guri, a shinigami-cosplaying cupid holding a mysterious item, appears in front of the high school boy Aino Seiji, trying to force him to kiss a random person. With Seiji choosing to kiss Guri, how will his yandere crush, Hiyama Akane, handle it!? Since normal love seems to have become a little boring these days, the gallant (and troublesome) messenger of love appears! This love triangle is a matter of life and death! So will Seiji survive this? Find out in this hypertension love(?) comedy.