Nana's secret is in danger of being exposed when a boy in her class is revealed to have the ability to travel into the past and rewrite history.

Nana befriends Kyoya, the other transfer student at the school, in an attempt to discover his talent before he finds out what really happened to Nanao.

Nana's mission comes to a standstill when Kyoya starts to spy on her; when she discovers Michiru has healing abilities, she hatches a plan to use Michiru's talent to regain the upper hand.

Just when Nana thinks she's gotten off scot-free, it's revealed that there's a necromancer in the class who can manipulate dead bodies and draw out their memories and talents.