Nisemonogatari

Kidnapped by his own girlfriend, Araragi must outwit a charismatic swindler to save his sisters.

After surviving a vampire’s bite, Koyomi Araragi finds himself tangled in a new, absurdly domestic crisis: his girlfriend Hitagi Senjougahara has literally locked him up in a closet to protect him from a con artist named Deishuu Kaiki. Kaiki, the same swindler who once ruined Hitagi’s family, has now set his sights on Ararabi’s older sister, Karen, dragging her into a bizarre scheme involving fake miracles and counterfeit relics. When Karen’s frantic SOS reaches Araragi, he is forced to break out of his makeshift prison and dive headfirst into Kaiki’s labyrinth of scams, curses, and half‑remembered legends. Meanwhile, the younger sister Tsukihi, who claims to be a harmless “firefly” girl, begins to exhibit strange, otherworldly quirks that hint at a hidden lineage. Two enigmatic women—one cloaked in mystery, the other dripping with seductive menace—appear, each pulling the siblings deeper into a web of family secrets and supernatural intrigue. As Araragi juggles rescue missions, bizarre investigations, and his own lingering vampiric trauma, the series blends witty banter, surreal visuals, and a dash of ecchi mischief into a tightly wound, eleven‑episode rollercoaster.

A dialogue-heavy supernatural mystery that leans heavily into sexualized fanservice involving underage characters, including an infamous extended scene simulating oral sex. The series explores complex family dynamics but frames incestuous tension as titillation rather than critique.