And idk we can kind of handwave it and then if anything happens with the clerk Mukuro will return like a true shoujo manga rival and fight for his wife.
Even her bullshit and illusions aren't good enough to convince him otherwise. : O Also apparently spindly little hamsters in school girl outfits are popular.
Because Mukuro hates his face that's why. : \ And oh no gasp shock horror. But lmao idk unless the kid came out to be perfect vessel number two why does Mukuro care? Chrome is her own person etc etc.
or at least long enough to hopefully dissuade Mukurobut the members of the vongola harem could have told you that