Ryuuki's older sister and a chemical genius who previously raised him.
: A 4-episode animated adaptation (OVA) produced by Queen Bee began releasing in September 2024. shounen ga otona ni natta natsu 1 f1dbe2701
It was the last day of the summer festival. The local shrine was packed with yukata-clad families and couples holding hands. Ren stood by the entrance, watching the paper lanterns sway in the evening breeze. He wasn't there to celebrate; he was there to say goodbye. In three days, he would leave this small coastal town for university in Tokyo. He was trading the sound of the ocean for the drone of the train tracks. Ryuuki's older sister and a chemical genius who
: Ryuuki’s older sister and a "chemical genius" who raised him before moving away. shounen ga otona ni natta natsu 1 f1dbe2701