Shounen ga Otona ni Natta Natsu, 소년이 어른이 되는 여름, 少年が大人になった夏
Shounen ga Otona ni Natta Natsu 3

On a sweltering summer night, Takumi finds himself torn between his deep admiration for Haruka, the sultry video streamer, and his lingering affection for his stepsister, Ayame. As desires ignite, their tangled relationships unfold in passionate embraces—Haruka tempting with seductive whispers while Ayame claims him with possessive fervor. Caught between devotion and lust, Takumi surrenders to their shared hunger, each touch unraveling new layers of pleasure and secret longing.