When Zael is finally about to be knighted, he gets up and refuses to be knighted after seeing how rotten the system is, storms off and goes in search of Calista
From the same scene, Therius' taking a stand against the Count for Zael. It was an awesome moment for both characters, and went to show how much they both grew in their own ways.
Calista, who gets slapped around by her uncle Count Arganan, finally gets fed up with it and gives Arganan an Armor-Piercing Slap because she's done putting up with his abuse. She slaps him so hard that he actually falls over.
Yurick's killing blow on Zesha is throwing a fireball... with his father's dagger inside it.
Another one for Yurick during the Final Boss: an unbreakable shield is put up, and the part decides to attack it with everything they have, but instead get blown backwards. Yurick then removes his eyepatch, revealing the Magical Eye that the eyepatch acted as a Power Limiter for, and his Limit Break Meteor gets upgraded to Big Bang. Once you give him the order, he shouts "BURN IN HELL" and utterly destroys both the shield and the ability for the boss to create a shield. Then he realizes he can control his Magical Eye now, and his Limit Break remains for the rest of the battle.