Oh, right…there’s another reason Koyomi probably shouldn’t let himself become a full vampire. As vampires are kind of the head honchos of apparitions, it will fall to Kagenui to destroy him, a duty she will not hesitate in carrying out. Even Ononoki, who considers Koyomi a friend, would be forced to turn on him.
Ononoki doesn’t want this, and so asks Koyomi to promise he won’t use his vampire powers anymore. Koyomi promises, but Ononoki detects his uncertainty.
It’s one thing to promise when nothing is on the line, but if Senjougahara or Hanekawa or his sisters were in mortal danger, he wouldn’t hesitate to break that promise and use all his power to save them, consequences be damned. The thing is, Kagenui is making the consequences to this very likely scenario quite clear: she and Ononoki will kill him.
Shinobu weighs in on the discussion, saying once Koyomi is dead she’ll be fully released, and will waste no time exacting her revenge upon Koyomi’s killer. The two stare each other down, and suddenly, the conversation looks like it’s about to turn into some kind of duel.
The cooler heads—Ononoki and Koyomi—talk their partners down. It’s a great way to underline just how tenuously close Koyomi is to the boundary between human and apparition; between friend and target. But, as Ononoki says, they’re not at that point yet; not all is lost.
After briefly getting into why Kagenui specializes in immortal apparitions, during which time she mentions that there’s at least one other specialist like her who does so, but is a hermit he needn’t concern himself with, when Gaen calls her on the phone. Kagenui relays to Koyomi that he should rush to Kanbaru’s house without delay.
There, they find Kanbaru and his sisters gone, and a string of paper cranes left as a message, perhaps symbolizing Tsukihi (who was a phoenix). Already, Koyomi is finding it tough to even withstand the environmental extremes of riding Ononoki as she performs Unlimited Rulebook; unable as he is to tap into his vampowers.
The group ends up somewhere more…abstract, where Kagenui informs Koyomi that the one who took the girls is Tadatsuru Teori (apparently a very trigonometric name in Japanese), a dollmaster and the very hermit she was talking about before Gaen called. However, she doesn’t think the girls are in any particular danger yet, as she believes Tadatsuru is only using them to get to Koyomi and Shinobu. Unlike Kagenui, Tadatsuru isn’t held back by someone like Gaen. He’s operating under a different rulebook.
So, just when Koyomi learns that he can no longer use his powers, that hypothetical but highly likely scenario of him using his vampowers instinctively to save those he loves, which would lead to his demise, is quickly becoming a reality. At this point, Koyomi becomes rather resigned to his fate as a matter of the universe ‘calling in all his tabs at once’; something he can accept without complaint considering how much he used his vampowers in the past. Regardless of intentions, he knew was always going to exact some kind of price for that power.
Kagenui, in almost a supporting tone, warns him not to get ‘drowned’ in the why of what is happening. Forget divine punishment; maybe Tadatsuru just planned the whole thing to get his hands on him and Shinobu, and chose this specific because he knew Koyomi would be neutralized. Thus, Koyomi must rely on Kagenui and Ononoki a bit more than he usually would in order to save the girls.
Perhaps it is possible after all for a powerless, reliant Koyomi to exist. Never mind; knowing the alternative, it has to be possible…or he’s a goner. We’ll find out in the final installment.