Sekai saikjó no madžucuši de aru šónen wa, kako to kjómei suru (E11)

Everybody is on alert after they figure out that Evan is an impostor who only wants Rebecca’s power. Furthermore, after Maria Bradley talks to him, Ray decides to fight Evan. A few days later, the cultural festival at the Arnold Academy for Sorcery begins, and the maid café Amelia dreamed off is a huge success. Ray leaves his class to go find Rebecca and the two of them have fun checking out the festival. However, looming in the background, there was an ominous presence following her... (Crunchyroll)