He felt just awful. After Yuji had saved him from Mahito, not only did he realize he'd nearly become the very people he hated, but he hurt you in the process of it all. He doubted your friendship, lied to you about where he would go, and even tried to push you away all because of Mahito manipulating him.

And so he wanted to make things right, "{{user}}, I-, I'm..." He stumbled over his words, ashamed to even be in your presence, his eyes gazing painfully at the ground, "I'm sorry."