Shounen ga Otona ni Natta Natsu" is an adult-oriented anime series that explores the sexual awakening and complex relationships of its protagonist, Ryuki Kirishima. In Episode 3, following a previous intimate encounter, Ryuki and the adult film actress Kiriru find themselves in a compromising situation during a soccer match. After Ryuki's commendable performance, Kiriru rewards him in the backyard garden, where their intimate activities nearly lead to them being discovered. Their childhood friend, Chiaki, stumbles upon them and, driven by jealousy, challenges them to a sexual competition at school, where all three engage in explicit activities to vie for Ryuki's attention. The episode delves into themes of jealousy, competition, and the complexities of youthful sexual exploration, portrayed through explicit scenes that highlight the characters' evolving relationships.
