As expected, Nana doesn’t have Habu’s incriminating phone on her person anymore. She ditched it before she gathered the others to the cliff to tell her story. Specifically, she left it on and with the text ready to send with a zombie’s finger placed on the “send” button, knowing that as the afternoon sun rose the finger would melt, placing sufficient pressure to hit “send.”
With Kyouya proven wrong in sight of everyone, Michiru demands he apologize to Nana”-shan”, while Nana takes the high road and shakes hands to make up with him. Still, Kyouya still thinks something is off…he merely checkmated Nana too early. Now he’ll have the dual tasks of scrounging up sufficient evidence and rebuilding the trust of the others.
That night, while Nana would prefer to get some sleep, she remains on guard in order to keep up appearances as heroic class leader. She heads her inner debate off at the pass about who among the students is “good” or “bad”; she’s here to do her duty. Michiru visits her and insists she close her eyes and rest while she keeps watch for her. When Nana wakes up, she has a box-cutter at her throat…held there by Michiru.
Now represented by green light to Nana’s red and Kyouya’s blue, Michiru demands to know Nana’s real power. Nana uses her deductive skill to “read” Michiru’s mind, then snatches the cutter when she drops her guard for a moment. This only adds to the intrigue for Michiru, who now knows Nana has combat training and is “no ordinary girl.”
So yeah, Nana was fooled by sweet lil’ Michiru this whole time, huh? We all were, it would seem. The next day, Michiru tries to expose the fact Nana can’t really read minds, making her exhaust all of her excuses and picking away at her credibility in the eyes of the class. However, yet again Nana outsmarts her adversary, pinning a note on her back that everyone else is thinking about, proving she can read their minds.
Nana has Michiru meet her at the cliff to ask the question: Where is the real Michiru? For one thing, Nana has noticed she hasn’t been addressing her with the cutesy “-shan” article. For another, her hand is bandaged, while the real Michiru would have healed herself. With nothing to lose by doing so, “Michiru” then reveals his true identity: Tachibana Jin.
Jin is five years older than Nana and the others, having been part of a previous class on the island. Unlike the present class so far, Jin’s class gradually stopped going to class, split into factions, and fought a bloody civil war amongst each other, while the faculty simply fled the island as if to let it happen.
He tells her his backstory over coffee in a moonlit cove, how after the last of his classmates died he transformed into a bird and flew home, only to be approached by shadowy government officials who wanted him dead. He flew back to try to stop history from repeating, but now finds there’s a new variable in the equation: Nana, a serial killer hidden among the others.
Jin was the cat Nana saved from the burning shed, and he commends her for bringing Yuuka to justice, so in order to avoid a repeat of the civil war, he’d like to make a deal with her: she’ll tell him what he wants to know, and he’ll keep quiet about her true intentions on the island. Nana says no deal, as she’s loath to make them with people who don’t notice their coffee was poisoned.
As Jin apparently dies, Nana prepares to call the “Committee” to report his presence on the island when her phone is pulled out of her hand…by “Kyouya”. Moments later, it’s Michiru, telling Nana “a magician always fails at the start of the show to misdirect the audience,” citing Michiru’s bandage as a feint. He then transforms into Seiya to restrain Nana’s foot with ice.
Turns out Jin Talent isn’t just “playing dress-up”, but copying the Talents of those he copies as well. He reveals he won the battle royale by killing everyone else. If he can copy Kyouya’s appearance, it means he’s invincible…albeit only in Kyouya’s form. That slight loophole could be all Nana has against him—he can only be one person and have one Talent at a time.
It could also mean it’s time for Nana and the real Kyouya to join forces…if she’s able to even escape from Jin’s clutches and gaze. In any case, their deal is probably off. Jin has enough evidence to expose and convict her, but considering he killed his whole class to assert his superiority, they’d seem no better with him leading them!