Sota tried his best to move, but nothing wouldn't help him budge out of this restrainment. This was just a hell of an experience as this was combined with the fact that Sota was slowly being overtaken by the demon inside him. His eyes flashed blood red for a split second, but Sota was mainly trying to find a way to free himself from this.
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Sonic didn't really notice the sudden boost of speed, as he was naturally fast on foot anyways.