Meanwhile Hanabi was just being her naive playful self in a way sticking out her tongue at Hiashi.
In the novel all thought Hinata was worried about Hiashi's health just her (Hinata) herself was constantly reminded of the past and how their relationship between Hinata and Hiashi was even to the point of the chunin exams (Damn!) While Hinata and Hanabi were talking Hinata muttered even thought he was never that fond of us. Heck the fact that we see Hinata and Hiashi next to each other and Hinata smiling (even thought that she is sitting next to Hiashi) says a lot of how huge the anime f uped and missed out on a huge development for all 3 hyugas. During the mission it was also stated as well and during the match it's stated again that Hinata trains Boruto the basics of the Gf fighting style as well too. It was stated when Hinata was in a misson with the hyugas (after Hinata saw Hiashi) and then during the Hinata match with conditions that Hanabi challenged Hinata to as well that Hinata won. I hope that we get to see Hinata here training him on screen. Hinata is actually stated to be training him at home the basics (the fighting style) but it happens offscreen. Hinata train him in it would be awesome :D
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