Ep. 121: Yami and William discover the Wizard King's youth due to stored magic, while Asta faces parliamentary danger.

Yami and William find the Wizard King alive due to 13 years stored in a magic tool in case he was ever killed, rendering his body of a 13 year old. Julius orders William to help with the recovery effort. Julius reveals to Yami, Asta, Mimosa, Noelle, and Secre that his younger body has far less magic, meaning he has less influence over the selfish nobles and will be unable to protect the kingdom from attack. He also worries Asta may die; as his power is demonic and since it was a devil who attacked the kingdom, the Magic Parliament will probably blame Asta then execute him. Secre confirms that Asta's demon form as well as the horns on her head could be used as evidence they had contact with devils. Mimosa explains the Magic Parliament are royals and nobles who create laws and preside over trials for serious crimes. Meanwhile the Clover King credits Sekke for saving him, despite it being an accident. They are attacked by anti-royalists hoping to assassinate the king amid the confusion, but they are saved by Damnatio Kira, Chairman of the Magic Parliament. Asta and Secre are asked to testify before the Parliament, but when they arrive they are arrested by Damnatio who demands evidence of the devil behind the attack. When Asta can provide none Damnatio decides to simply charge the people possessed by the elves as normal criminals. Damnatio brings in Marie, Gauche's sister, and orders her immediately executed for her actions during the battle, forcing Asta to assume his demon form to save her, revealing himself to the entire Parliament, just as Damnatio wanted him to.

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