The fate of Komori Makoto and Sakurakomi, torn apart by Kobata, a teacher at a prestigious girls' school, remained shrouded in mystery. Meanwhile, Mika left a letter behind for Kobata and suddenly vanished. Written in that letter was the name "Maeda Reina." One of these two women, Maeda, would soon cross paths with Kobata, setting a new story into motion. Around Kobata, something had begun to stir—quietly, yet undeniably.