Board Thread:Naruto Discussions/@comment-26479810-20180620141830/@comment-25122992-20180621103346

Actually, filler or not, these weren't just few days, in fact. There's a formidable timeskip between Hagoromo beginning his sage training and Kaguya getting to know it. This is clearly visible by both Hagoromo's and Hamura's change in appearance - earlier, they seemed to be rather teenagers, but later, they already appear to be young adults. The most prominent features are Hagoromo growing a goatee and Hamura growing his hair to the waist length, as opposed to his previous shoulder length.