That’s him using Fa Jin… that’s why he suddenly speeds up several tens of times and surprises Nagant. That entire curve is him boosting with Fa Jin. He uses it, then we get the description of what it does.
Incredible how instead of acknowledging my points you decide to bring in something unrelated. Since apparently I said that Nagant doesn't scale to Izuku, even though I've said multiple times that she scales to him. Why the hell are you acting like I'm saying Nagant gets blitz and doesn't scale to anything?
In this wiki, Nagant is comparable in speed to 45% Izuku. For the sake of argument and not being confusing her speed is on par with his own. In my personally opinion, she's slightly slower. Just enough to make a clear difference but not enough to make a massive one or change the outcome of their fight.
His speed didn't increase there, Izuku just swung around the building because he needed to get into place before he used Fa Jin.
It's not Fa Jin period, use your own head. Izuku can't use Fa Jin to swing around the building, since he wouldn't have anything to use to launch himself at Nagant. Also don't say his legs glowing is proof, Izuku's legs glow even when he is storing up Fa Jin or is ready to use it, it doesn't only glow at the moment he uses it.
See
here and
here, both glowing and he's not using the boost. Izuku even confirms in his thoughts that he was storing energy in that second scan, which is when he was dodging Nagant's bullets.
And both of his legs are glowing, unless your saying he used Fa Jin in both of his legs to spin around the building?
Also another thing,
this scan right here shows further proof. See that close up to Izuku's foot and how it's bending, he's about to kick to use Faux 100%. He's about to use the built up energy in his leg, he's about to use Fa Jin to propel himself. He did not use Fa Jin before this moment, or we would've him seen him prepare to do so.
Look at Izuku's left leg here, see how it has that super speed blur? While his right like is curved up and has no super speed blur lines or whatever. That's because he just kicked and his leg is still in that straight motion. He ricked in the scan before which shows the close up to his left leg, which is after the building swing.
How would Izuku use Fa Jin to spin around the building, launch himself at Chisaki, and than at Nagant? Please also explain how he uses Fa Jin three times? He can't use Fa Jin to swing around the building or he wouldn't been sent flying around the building. He would've wrapped around it due to his angular momentum.
Yet he reachs Chisaki in a straight line, because he uses Fa Jin after the swing. That's why they have a close up shot of his left leg, he's about to kick off.