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An OVA (Original Video Animation) adaptation was produced by the studio Queen Bee . The first episode was released in late 2024, with subsequent episodes continuing through 2025. shounen ga otona ni natta natsu 1 f1dbe2701 best
The story centers on , a young boy living independently after his parents' death. His older sister, Reiko , is a brilliant chemist who raised him before moving to Tokyo for her career. The plot begins during a summer break when Ryuuki, who has previously shown little interest in girls, becomes fascinated by a popular adult actress known as Kiriru (or Kirill-sama). Key Plot Elements You can find further details or related discussions