Nana contemplates her next target when the two class Gals pick on Inukai Michiru, the meekest, most guileless member of the class, with a love letter Nana knows is just a fake. Michuru spots a scrape on Nana’s leg and proceeds to reveal her Talent: a tongue that heals all wounds. It’s a scene that happens so suddenly you almost overlook the yuri/BDSM subtext.
Nana also determines that Michiru could cause the deaths of 150k (still not sure how that algorithm works), and thus as good a next target as any. The only problem is, Kyouya is still breathing down her neck. Nana decides she’ll play her part, first in informing poor Michuru that her after-school rendezvous will be a bust (the love letter was fake), then cheer her up with some lunch.
That night, Nana arms herself with an icepick to do the deed, but finds Kyouya sitting right outside her door, “guarding”, i.e. watching her out of “concern”, i.e. suspicion. She then proceeds to play loud music and sneak out her window—which she should have done in the first place! It appears as though Nana is going to stab Michiru in the back, and Kyouya hears a scream from Michiru’s dorm…but when he arrives, it is Nana on the floor with a stab wound.
She claims she heard the Enemy’s inner-voice and raced to save its target, Michiru. Detective Kyouya can use this latest incident and connect it to past info however he wishes, but everyone else in the girl’s dorm is immediately united behind Nana when they see what she did for Michiru.
Kyouya later considers that Nana could have stabbed herself—which of course she did—but Nana presents to him and everyone else a lie (an invisible monster) more feasible than the truth.
Kyouya’s lack of concrete evidence to support his accurate suspicions to a class now fully trusting of Nana essentially paralyzes him. His theories remain in his brain, harmless to her efforts. She’s even able to get Ice Prince and Fire Thug to agree on something: that SHE should be their new leader in Nanao’s stead. Since her self-inflicted attack is accepted as an attack by an invisible Enemy of Humanity, she can use them as cover for all subsequent killings. Nana is flying high—ultimately too high.
Her arrogance gets the better of her when she instructs an enthusiastically willing Michiru to talk with all of the other students and record their Talents in a book. This would seem to be a no-brainer considering what a Chatty Kathy Michiru is (and she can be offed when no longer useful), but the benefits are quickly nullified by an unexpected setback: Michiru’s probing tips off Hatadaira Tsunekichi, a psychic photographer who has acquired a photo of her killing him in the future.
Whelp, there’s the concrete evidence Kyouya needs so desperately to prove his suspicions! Thankfully for Nana, Tsunekichi comes to her first. He demonstrates with devastating accuracy that every photo he takes ends up happening without fail. Even when Nana changes her order, she ends up with a face-full of soba. Then he pulls out one more dagger: a photo of her shoving Nanao off the cliff.
This would put Nana in check, but for the fact that, as far as we know, only she and Tsunekichi have seen these photos. Tsunekichi also seems to have doomed himself: If there’s a photo of him being killed, and everything in his photos happens, then he must be resigned to die. So, will Nana succeed in killing him before anyone else sees the photos? Or will they be leaked, forcing her to use all her leader capital to defend herself?
It’s definitely a tricky new corner she’s been pushed into. Like Michiru, Nana considers Tsunekichi an imbecile, and I definitely can’t rule out her managing to outwit him and turn him into another victim of the Enemy. But his power exposes a huge flaw in her execution of this mission: Why the heck did she start killing anyone before she learned the powers of everyone? Assuming she gets out of this fix, what other surprise Talents could compromise her, all because she killed too fast?