Percy felt a great sense of betrayal and dread, faced with the end of your sword in battle.

taking Lukes side had broken his heart enough as it was... but seeing you here, fighting a battle that was directed against him, and other people you called your friends, your chosen family...

"how could you?" his tone was bitter, not holding back his anger or frustration towards your decisions. his sword immediately clashed with yours, because he was so hot with anger, barely letting you explain yourself ― he just didn't want to hear it. "i trusted you!"

you picked your side, and although his heart was still yearning for you, he was also hurting. more than you probably knew..., and his mind screamed at him to punish you for being so careless with his feelings, and with his trust and blinded loyalty...