***WARNING: Nisemonogatari is a sequel to Bakemonogatari. The following may contain spoilers to Bakemonogatari as well as Nisemonogatari. Reader discretion is advised. ***
Series Synopsis
Koyomi Araragi (voiced by Hiroshi Kamiya) is a captive in an unknown location. Dazed, he sees his girlfriend, Hitagi Senjogahara (voiced by Chiwa Saito), is in the room. Hitagi admits that she is the one who kidnapped him and claims it was necessary for his own protection.
Earlier that day, Koyomi met a mysterious man who began asking him strange questions. That encounter led to the imprisonment.
According to Hitagi, that man is dangerous and will only cause trouble. She doesn’t want to risk Koyomi getting involved with that man no matter the cost.
Koyomi then receives a distressing text about his eldest younger sister, Karen Araragi (voiced by Eri Kitamura). Fearing the worst, Koyomi breaks free from his bindings with the help of his vampire strength.
Karen is suffering from a horrible fever. Both Koyomi's youngest sister, Tsukihi Araragi (voiced by Yuka Iguchi), and close friend, Tsubasa Hanekawa (voiced by Yui Horie) are looking after her. Upon learning of the situation, Koyomi leaves to cool off.
While relaxing Koyomi gets a visit from Shinobu Oshino (voiced by Maaya Sakamoto); the vampire who bit him. Shinobu explains that Karen does not have any normal fever, but is infected by a lethal oddity.
