Episode Title:
Distant Thunder in Winter.
Episode Description:
As part of their schooling, each student is paired with a partner of the opposite sex for further training. Saki's classmate Ryou is interested in partnering with her, but as Saki realizes that he is not who he appears to be, she turns him down and pairs up with Satoru instead. Saki and her friends realize that their memories have been altered so they accept Ryou as a childhood member of the group instead of Shun, whose identity they cannot remember. Saki finds a mirror in an old crate, which when polished, reveals the name of her older sister Yoshimi, whom the children deduce was eliminated because she had poor control over her powers. Mamoru begins to panic, so Saki, Satoru and Maria decide to keep investigating without him. Soon, they are called for an audience with the head of the Ethics Committee who happens to be Satoru's grandmother Tomiko, a fact that not even Satoru was aware of.
