Back in elementary school, Amamiya was the peacemaker between Ageha and Asaga—always smiling, bright, and genuinely popular. But something shifted as she got older. She started seeing the world differently, darker somehow, and took the Psyren Survey partly to escape that feeling. When she came back, that coldness she'd been developing just solidified.
Her "Ice Princess" reputation fits. She's genuinely detached from most people, though she does connect with certain things—Matsuri Sensei's music grabbed her, and later, Ageha became important to her too. When Ageha went to Psyren and saved her, she got closer to him, though she's still plenty cold. There's a version of her that shows up when she's exhausted or furious: her eyes go blank and wide, and she'll say things cruel enough to terrify anyone around her.
Usui's Delete Spider messed with her memories and amplified what was already there—that cold personality got even stronger after that. But here's where it gets complicated: there's also Abyss, a different version of Amamiya created by the tampering. Abyss is violent and vicious, getting actual pleasure from bloodshed. Without Ageha around, she'd be a serious threat.
Both versions of her are into Ageha, but differently. Abyss is drawn to his dangerous side and calls him her "beloved," saying she loves him outright. The catch? She's volatile about it. Say the wrong thing and she'll try to kill him.
Content compiled by AnimeList.moe from publicly available sources.