someone explain chapter 60

Spoiler alert
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Mutant hyung is taking care of the mc so he get healthy again and his body be able bear a child, basically. So he’s acting all caring with him and are trying to control his libido to not have sex (r-word, better saying) with mc (that’s why he got a bulge in the and of the ch60).

Mc felt repulsive feelings when he felt the mutant hyung dick between his legs and said that all the mutants in the end of the day act the same way r-word him like a animal.