The Misfit of Demon King Academy Episode 7

Mother's Words (母の言葉, Haha no Kotoba) is the 7th episode of Maō Gakuin no Futekigōsha anime series.

Synopsis
Anos resolves to defeat the Royalists no matter what tricks they have up their sleeve. He uses the sword received from his father Gusta to fight in his first match in the Magic Sword Tournament. Meanwhile in the dressing room, Lay clutches his chest. Sensing that something is wrong with Lay, Anos speculates that somebody is controlling Lay and a hostage may be involved. Who is conspiring to control the Magic Sword Tournament from behind the scenes?

Characters
In order of appearance:

Summary
Anos easily defeats Krut which angers Emilia. This is followed by Lay winning his match. Backstage, Anos and Lay confront each other where Anos notices something is wrong. After he wins his next match, Anos gives his mother his sword. He and Misa then head to the hospital. There, they meet Lay's adoptive mother who has Spirit disease. She reveals Lay is being controlled by the Royalists. Afterward, Misa volunteers to help her. Meanwhile, Emilia confronts Anos's mother and their Unitarian classmates. She assaults them with  to destroy the sword, but the Unitarians use magic to protect Anos’ mother, at the cost of getting severely burned. When Anos arrives, he freezes Emilia and then casts  to heal all the girls and his mother. Anos asks each girl their name and expresses his thanks to how he is indebted to them for protecting his mother. He angrily teleports Emilia to the Arena where he stabs her with a sword, inflicting a mortal wound. He humiliates her by making her beg for her life by having her openly acknowledge him as the true Demon King of Tyranny. He then kills her for not being true to her acknowledgement. He immediately uses  to resurrect her as a hybrid, to torture her for her prejudice-fueled sins. He also puts a curse on her so that should she die, she will always be resurrected as a hybrid. Back at the hospital, Lay stops Misa to protect her life force. He then has a conversation with his adoptive mother where she tells him to live his life the way he wants to. Lay leaves before Anos can return. The next day, Anos and Lay face each other in the finals.

Anime Differences

 * In the anime, Lay holds Misa at knifepoint for some reason despite knowing the kind of person she is. In the light novel, however, he finds her much earlier and treats her more nicely, only using the magical dagger to sew her shadow in place so she can't leave until the finals.
 * The part where Anos tells Emilia that after being stabbed by his demon sword, her body will become a breeding ground for poisonous worms that become more painful as they grow and eat her insides, is omitted.