[Fukuinu] Jingai Onee-san to Kenzoku-kun ~Boyish Succubus hen~ (COMIC Unreal 2025-08 Vol. 116)

A shy boy discovers his charismatic older sister‑figure, a mischievous succubus, has been secretly feeding on his life energy, igniting a dangerous game of desire and power. As she teases his weak spots and revels in his helpless surrender, the tension escalates into an intimate battle of control and vulnerability. The story blends playful seduction with a forbidden dynamic, promising an intense, erotic journey for fans of shotacon manga.