Yikes. The MC is a pussy.
Play for a long period of time. The MC at the start is a cockroach.
But he "mans up" later in the game ..... well more like corrupted rly.
MC starts picking up traits from his evil subconscious.
Its very subtle, you can even miss some hints if you play the game in one sitting.
The writting in this game is very good.
----
I honestly believe from how the MC and his evil subconscious are written, that later in the game MC will stop hearing the voice from him subconscious because they would be the same person.
But it will be a gradual process. MC is getting used to the fact his Evil Subconscious takes control of his body and the MC just "enjoys the ride".
Later I believe the Evil Voice will disappear periodically in some sexual/confrontational situations and the MC will panic because he got comfortable being in the passenger seat, being just an observer. And MC will starting thinking stuff like "What would he do in this situation" (referring to his evil subconscious).
And eventually at the end of the game, the Voice will disappear entirely, because the MC will no longer need him.
Thats my theory tho.