I personally don't find the MC hateable or whiny though. I mean under the game assumption that the MC does get hurt from not cumming, he is literally unable to do anything when his hands are broken. If his hand wasn't broken or if he didn't have this illness, then I can understand other people's hate for MC. But at the moment, he is helpless not a whiny loser.
On a side note, there seems to be a sequel:
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Based on the sypnosis and the characters, it probably a direct sequel with the mc being the same mc from the 1st game.
Other Images (I used OCR):
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