This filler takes place after the Chunin exams, Sakura is already with her short hair.... and one of the biggest meanings of Sakura cutting her hair on the chunin exams was "letting go of her old self", she was letting go of that old Sakura that just cared about looks, love and nothing else and started to become a true ninja, after that she acknowledged that she was wrong about Naruto, she supported him in his fights, her behavior around Sasuke become more genuine and less fangirl, even when she thought that was Sasuke who had saved her from Gaara and he told her that was Naruto who did that, instead of get mad that her savior wasn't her prince Sasuke, she kindly smiled to Naruto. That was the Sakura after Chunnin exams but Pierrot keeps stuck in that Sakura from chapter 3.
I kinda understand now why NaruHina is so popular, I mean, Hinata is always portrayed as the one who always try hard (she is always shown training or something like that) and has a cute and pure love for the main character while Sakura is always portrayed as a annoying kid that hits Naruto for whatever reason and just want to get him out of her way. It's that kind of wrong portrayal that made NS / Sakura being so hated by the fandom.
He told naruto to make destiny with his own hands instead of relying on a string.
But yea everyone was pretty shallow..it is part 1 after all and that's how they were
and then he took Hinata's hand on 615!