Shounen Ga Otona Ni Natta Natsu - 01 ★

Ryuuki’s older sister, Reiko, is a 24-year-old chemical genius who practically raised her brother after their parents’ death. Men are not popular with her due to her dark and straightforward atmosphere, but she doesn’t seem to care. However, she harbors a secret: she has developed romantic feelings for her younger brother. To cope with these taboo desires, she creates the carefree and lascivious persona of “Kiriru,” an online adult streamer who rises to number one on the site. Her identity as Kiriru is one of the story’s central twists.

“You’ll take over someday,” his father had said last week. “But first, get into a good university. That’s your job.” shounen ga otona ni natta natsu - 01

The phrase " Shounen ga Otona ni Natta Natsu " (translated as " The Summer a Boy Became an Adult ") refers to a mature-themed manga series by the author Ryuuki’s older sister, Reiko, is a 24-year-old chemical