Kip. 1: Orokamonogatari: Tsukihi Undo

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Yotsugi Ononoki has been infiltrating the Araragi residence to keep an eye on Tsukihi Araragi. While Tsukihi is at school, Yotsugi freely spends her time, but she is seen by Tsukihi, who suddenly comes back home. (Source: Crunchyroll)