doubt it's gonna be mpreg, but could be a possibility
however it seems his mother has already accepted he won't marry a woman, since she started instructing him on princess stuff like embroidering lol, so I don't think his parents will be a problem
His parents are very doting, they'll prob reactly negative in the first few minutes then accept it just like that lmao. Add to the fact that they felt guilty for treating MC as a child for having those 'fantasies' of going on an adventure with the hero to save the world. They felt ashamed they didn't believe him, that will certainly give an additional brownie point HAHA
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actually I understand why Urban refused with the reason "i'm a man". Besides in the original story Kyle should be with the princess, Urban is also a prince. Precisely crown prince and he definitely needed to have offspring and marry a princess.
ofc, if the story changes to M-preg, the reason can be refuted ╮(￣▽￣)╭