also i wanna say as well, luca& #39;s speech impediment is very likely from his dental/mouth injury that he has (the reason why he has his tooth sticking out like that, that is highly likely to be caused by an injury)
Having misaligned teeth and problems with your mouth affects your speech a lot, people don& #39;t realize but having like, a misaligned jar or other dental issues affects the way you form words, since you use all sorts of parts of your mouth to speak