It sounds like a simple question.
You look down at your body and think, "That's me."
You look in a mirror, "That's me too."
I think, therefore I am.
Will that be enough for Todd? To know that the one doing the thinking is him, even when nothing else is what it used to be.
Even when the new body's reflexes accidentally hurt someone?
Even when the new body's hormones make him question his gender identity?
Even when she starts questioning her sexual orientation?