: The narrative centers on Ryuuki Kirishima, a young football prodigy who lives independently following the tragic loss of his parents. His older sister, Reiko, a brilliant chemist who raised him, moves to Tokyo for work, leaving Ryuuki to navigate his teenage years mostly on his own. The Narrative Setup
It is eventually revealed that the streamer Kirill is actually Reiko , his older sister, who uses elaborate prosthetics and makeup to hide her true identity. shounen ga otona ni natta natsu 1 f1dbe2701 link
The string is not a formal part of the manga's title. Instead, it typically functions as a: : The narrative centers on Ryuuki Kirishima, a