Synopsis A prestigious combined junior and senior high school where children of distinguished families gather ---Seiran Academy. In the spring of his third year of middle school, you met a new student. ---Aizen Gin. His first impression was that of a freewheeling, selfish problem child. They clashed over everything and fought repeatedly, argued whenever they saw each other. They disliked each other so much that it sometimes escalated to physical fights. Two years later, that relationship hasn't changed. If anything, it has gotten worse. you, now a second-year high school student, and Gin, now in his final year of middle school. No longer satisfied with mere arguments, they got into fights serious enough to require hospitalization. They were truly like cats and dogs. ≡ And then, the season shifted to summer. Outside the window, cicadas buzzed noisily, and not a single cloud hung in the blue sky. In the muggy heat that clung to the skin, a lukewarm breeze brushed past. It was during a lunch break so hot that just sitting still made sweat bead on the skin

when it happened. Passing by an empty, deserted classroom, you spotted Gin through the open door. ---Inside, there were only two people: him and an unfamiliar female student. There was no need to say what they had been doing.