What Shima is saying actually sort of makes sense to him - at least what he can comprehend through the rising hysteria inside of him. It's not as simple as just separating him from his power source, it's separating him from a part of himself. The sheer reality of it is enough to rock his foundations, let alone the fact that he's apparently had his form mutilated with bestial traits.

"Then you should have killed me," he says, his voice frenetic with panic, his hand outstretched as he looks at the changes to his body. "I don't want your mercy - do you even understand what you've done?" He looks at Tyki like a cornered animal. "Stay away from me."

He'd be better off dead - better that than made like this, so disgraced by what they did to him that he'd barely know how to return home before.

It's the thought of home now that threatens to break him.