"I will fight―――. The only way I can atone is through this." In order to stop the bullying, Naname chases the mystery surrounding Sora's death and heads to meet Yuu with Izumi. Yuu, whose heart was closed off, begins to open up to the true selves of Naname and Izumi. Meanwhile, the 'Ai' and the followers of 'Ai' start to weave a terrifying conspiracy. Can Naname truly uncover the truth―――?