AWWW! I just started reading MCQ again and I finished it! I saw adult Geno still wearing the same scarf! I think I remember getting mentioned that it was given to him by his brothers, right? If it is the same one, he must be really good at taking care of things!
Actually his adult scarf is much bigger than the one he had as a kid XD I touched on this once or twice a long ass time ago but his brothers bought him a new one when he outgrew his old ones. :) And I do imagine its something of a tradition that his brothers buy him a fresh one if his scarf gets too run down for him. Honestly it probably would be a kind of cool outfit change to see all the different kinds of fancy red scarves he would have received over the years! Like maybe he wears a REALLY festive one for the holidays - or he probably has a holiday themed out for each season. I can see Geno having a ton of fun with something like that.