Overturned - Book 2

(I do not own this cover. It is from Your Lie in April)
Last we saw: Ryn is having troubles mentally, Akisa wants to tell him that she loves him but couldn't.
Now: Ryn goes to school but the others leave without him, he goes missing and Akisa wants to find him.
Ryn's voice, Sion, tries to tell him not to run away, but Ryn decides that he can't listen to a stupid voice in his head anymore. Daily, Sion tries to warn Ryn not to go any farther, but he doesn't listen. Then something really bad happens.
Akisa's voice, still unnamed, is trying to help her find her friend. Her brother, Kio, Ryn's sister, Sicily, alec, and Olive are with her. Then Sicily gets a call from here mother baring some news on his whereabouts.

Sicily's mother promises to wait at home and keep an eye out. And Lilia goes home to help. And their teacher decides to help as well from the sidelines as best she can.

What happens? Is Ryn okay? Will the others save him? Find out in Overturned.