After successfully evading Tsukihi's onslaught of awls, Koyomi quickly contacts Suruga Kanbaru to set up their meeting with his younger sister Karen. To Koyomi's surprise, it turns out that Suruga's remark about wanting to see Karen wasn't really serious... and that she tells Koyomi that she will be unable to take his sister's virginity. Koyomi snaps at Suruga's intention of doing indecent things to Karen, but Suruga playfully extends her gratitude for the thought of offering her sister to her, much to Koyomi's rage. With that, they proceed to the Kanbaru residence.