User blog comment:Imouto-tan/Sherria Amicus/@comment-4867780-20150530225141

I suppose it's time to add a section on Lawrence's sheet making Sherria one of his favorite pets :P

Seriously though, adding references to characters belonging to other users requires the consent of said users, for the reason you have realized with the previous line ;) Best move is to discuss it with them beforehand, to make sure the references are acceptable on both sides, which avoids later conflicts on the matter.