[Sayo looks back up at Sousei. The purpose he was given by Haru.]

To fight against the enemies who seek to change history.

[Although Haru didn't wish for revenge, Sayo still fights for his own personal desires. Because if history changed... depending on how far the change is, his own might get affected. His personal history and many others.]

I was summoned to join the army and to preserve history, that is my current mission back home.