Koyomi and Yotsugi land at the base of the mountain, where they are surprisingly met by Ougi Oshino. She talks with Koyomi for a while about his current situation and his upcoming confrontation with Teori. Koyomi and Yotsugi begin their journey up the mountain. The two discuss how they will be able to rescue Koyomi's sisters and Suruga. Koyomi hopes that they'll be able to sneak past Teori and get them without him noticing, but Yotsugi is doubtful of that plan. She expects that Koyomi will have to convince Teori to let them go, as this is how Koyomi normally deals with his opponents. Yotsugi then briefly explains how she was created. Back during their college days, Yozuru, Teori, Meme, and Deishu Kaiki did a project to create and artificial shikigami from the corpse of a human, under the direction of Izuko. Yozuru and Teori both fought for 'ownership' of Yotsugi, but in the end, Yotsugi chose to stay with Yozuru. This led to a falling out between Yozuru and Teori. Yotsugi discloses tha