







Before diving into the specifics of Chapter 1, it helps to understand the core premise of the series. The title translates directly to "When a Boy Becomes an Adult," signaling a narrative deeply rooted in the coming-of-age genre.
: The narrative serves as a modern, adult reimagining of The Strange Case of Dr. Jekyll and Mr. Hyde . It is revealed that "Kirill" is actually a persona created by his sister Reiko through scientific means, allowing her to explore her urges without social consequences. Chapter 1: The Encounter