The story itself was pretty imaginative, but the MC didn't go through enough emotional transformation, at least it wasn't shown very well, to get me to a satisfying ending. It seems like MC's punishment wore him out only on physical level.
There was no chemistry between the two MCs that I could find. Once again, Triple Z's attraction seemed purely physical with a dash of pity thrown in. Looks like he, too, fell prey to the "gift of God to all gay men".
Still, the story wasn't bad and was probably heading towards 4 stars, when both endings ruined it for me.