[Itaba Hiroshi] Sisterly Nature Ch.1-4 [Black Grimoires] [Decensored]

Sisterly Nature follows the fraught bond between two sisters, Miyako and her older sibling Nee‑chan, as they navigate a charged encounter with a lone male in a cramped, intimate setting. The narrative builds tension through whispered apologies, urgent pleas, and the raw physicality of their bodies, highlighted by explicit gestures and the ever‑present threat of violation. As the story unfolds, the sisters' secret desires and the male's aggressive pursuit create a volatile mix of desire, remorse, and inevitable climax.