Kotarou broke off from his argument with Lelouch just in time to see his Player fall.

"Ichi!" He ran a few steps, to help her up, get between her and Suzaku, something... and then she stood up on her own. He stopped, then recoiled when she hefted the pendant. "Ichi, stop--"

Smash. He'd managed to get halfway to the fighters before it landed, but the moment it did, he crumpled to the floor with a scream. The pain lanced through his skull and into his entire body, as though it was him that had just shattered; all he could think was, this must be what it feels like to die.

Blessedly, it was only seconds before he was unconscious.