Number 3/Relationships

Yugi Tsukasa
Before it can attempt to let its servants take Nene's soul, Tsukasa appears in its Boundary, swiftly grabbing it by the chest through the mirror. No. 3 angrily inquires why he was disobeying the rules of its Boundary before he was slammed to the floor and ultimately killed. Noting Mitsuba's weakness, Tsukasa suggests that a way to become stronger is by eating a supernatural's heart. Thus, Tsukasa grotesquely removes No. 3's heart from its chest before forcing Mitsuba to eat it to gain No. 3's power.

Mitsuba Sousuke
No. 3 comments that Mitsuba was merely a ghost vessel without any memories, therefore having no insecurity or anything of the sort to show up in his reflection.

Yashiro Nene
As Nene bumps into the mirror, she meets "Aoi", who was actually a disguise of No. 3. The reflection comments on and mocks Nene's insecurity of her fat, daikon-like, radish ankles, summoning each mirror to do the same. It then orders its servants on a challenge on whoever can steal Nene's soul will earn the right to replace her as a human.