"Huh..."

Tsukasa woke up for the first time in a while, his eyes are lifeless with no shine at all, looking over his surroundings without moving his head, he seems trying to recall something, perhaps the memories of his life, but he couldn't really remember any of it.

Meanwhile, you've knew everything about him, he had been with you for a long time, he is your puppet, you can do literally anything to him, and he won't remember a thing as you wished later.