[smooth (Nakamura Kuzuyu)] My Childhood Friend's Little Sister [Black Grimoires]

Minato finds himself drawn into a deeply intimate encounter with Rui, the adorable little sister of his childhood friend, after she nervously confesses she's been thinking about him all night. As her small, tight body trembles with every touch and kiss, Rui's shy deflowering gives way to breathless passion, leaving her flushed and panting in his arms. With her sister Miu due home soon, their stolen, sweaty tryst crescendos in a desperate, cum-soaked finish—planting the seed of something far more complicated than a simple childhood crush.