the guy that took chrome has been following her for ages, seems to me like he's a pedo or something lmao pretty simple that mukoro is going to pimp slap him when he realises though!!
and chris the reason he owned them is because they are the vongola equals who have upgraded their rings by using the blood, the rings = power, with the vongola getting their rings upgraded they will level out again, people are blowing the loss out of proportion, just my opinion though