Demon King from Today!
The Power of Truth (3x36)
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Yuri invites Alazon to Covenant Castle as an honored guest. He agrees to help Alazon to the exasperation of his subjects. As he is about to take the Holy Sword, Sara snatches it from Alazon, releasing its power and causing plants to erupt around the whole castle. When Yuri tries to stop him, he attacks Yuri. Yuri orders him to stop and drop the sword but Sara, in his fit of anger, vanishes along with sword with Berias grabbing him at the last minute.