Survival of the Fittest

Tekisha Seizon (適者生存)

During his search, Kyōya discovers that Nana does not have Kirara's phone, in which she reveals how she was able to dispose of it while giving herself an alibi at the same time. Nana then claims that she can hear Kirara's spirit. Michiru later catches Nana off guard, but Nana is able to subdue her. The next day, Michiru pesters Nana until she accepts her present. While doing so, Nana successfully convinces the class that she read their minds when she correctly points out what a note taped to Michiru's back says. 

At the cliff, a former student named Jin Tachibana confronts Nana, admitting that he used his talent to transform into Michiru. Taking her to a cave, he reveals they previously encountered each other when he was the cat Kyōya fed. He also reveals that a civil war broke out on the island five years prior. Afterwards, Nana appears to have killed Jin when she poisoned his drink. Just as she is about to contact the committee, Nana realizes that Jin can copy any appearances and talents.