Explaining Boruto's use of Uz***** in the latest chapter
I like to yap so
TLDR: Uzuhiko’s activation time has always been instantaneous, this chapter hasn't shown anything new. The charge time only affects the potency of the Jutsu. It needs neither charge up time to activate or use. It’ll just be weaker. Even if he starts walking, therefore no longer taking in the planet’s Chakra, the energy he’s taken in so far doesn’t dissipate. Even at its weakest, the effects are brutal and permanent. Its actually busted as fuck.
Wanted to clear up something I've seen a few people confused on. I saw a few people commenting on the fact that in the latest chapter, Boruto seemingly activated Uzuhiko instantly against Code. One page Boruto’s about to insert the bulb and Code tries his sneak attack, the next Boruto instantly activates Uzuhiko and attempts a counterattack. Some thought that it was because of the Karma, or he was already charging it from before (He wasn’t. If anybody saw what looked like wind or the energy that swirls around Boruto when he uses Uzuhiko before he went to the Juubi dimension, that was Bug’s bulb beginning to rot. We saw more of that steam come out when the bulb rotted completely and fizzled out). Others thought it might just be that he charged it off screen and Ikemoto didn’t want to waste the pages showing it. The actual answer is that Boruto did in fact activate it instantly and the Karma had nothing to do with it. Wanted to use this to explain a bit about Uzuhiko and clear up any possible confusion.
You see, Uzuhiko's activation time has always been nigh-instantaneous. People have confused the fact that Uzuhiko has to be charged for power with its activation time. This isn’t the case. The first time we saw Boruto use it against Code, he instantly activated it. The next time against Hidari it was the same. In one panel he’s telling Sarada that he needs to hit him with another Rasengan and he won’t give up, and in the very next panel Uzuhiko’s already activated and he tells her he’s going to use it. He then begins to explain how it works. He needs to take in the planetary Chakra through BOTH feet (this is important). The more time he spends taking in the energy, the stronger the attack. There is no limit to the Uzuhiko’s power. And even though he’s charging it to kill Hidari in one blow, it’s already been activated and can be used whenever.
Why is it important to acknowledge that both feet need to be on the ground? Because pretty much as soon as he activates it against Code, he begins to walk towards him. And if you know anything about walking, you’d know both feet aren’t constantly on the ground. Meaning there was basically zero charge time and that Uzuhiko was as weak as it possibly could be. So it doesn’t need to be charged to be activated or used. And we saw the same thing this chapter. Boruto activates it, takes a step and attempts to release it on Code with no charge time.
Again the only thing that charging Uzuhiko does is increase its potency. Against Code, it basically didn’t do shit. Knocked him back a few feet but he was still able to land on his feet. Against Jura he had some more time to charge it. He had a couple of pages to talk and it did seem more powerful. The energy surrounding Boruto was more volatile and the blast of the Jutsu seemed a little bigger. But still, didn't do anything in terms of physical damage. Against Hidari, after activating it he had time to explain the Jutsu and had a few pages worth of Sarada and Konohamaru buying time before releasing it onto Hidari. And the results speak for themselves. Left this dude half a torso with a head and one arm even though he couldn’t charge it as long as he wanted to.
Despite the disparity of power between different charge times, one thing is certain. You will feel the effects if you get hit by it. Even with zero charge time and no real physical injury, Code felt the effects. And with a little more charge time, Jura did too even if he quickly dispelled them. I bring this up because whenever people bring up Boruto using Uzuhiko in a fight, they always say he has to charge it to use it. And as we’ve seen here, he really doesn’t. So long as he’s on the ground, he can activate it instantly. And once it’s activated, he can use it no matter how long it’s been charging for. And we’ve seen him walking without the energy dissipating. So as long as he stays on the ground, he keeps the energy he’s accumulated so far even if he’s stopped taking in more. You don’t even have to be hit by it to begin to feel the effects. If you even touch him like Code did, your equilibrium will be so fucked you can’t even hit him and from your perspective it’ll look like he’s dodging your every attack even while standing still. And if it hits, you literally feel like the world is spinning to the point you can’t even stand let alone fight. And if you can fly, no you can’t. Remember Code was feeling all this off the weakest Uzuhiko possible. This is assuming you can even tank the initial force of the attack. Even at the weakest level, Boruto was surprised Code was still standing. As much of a bozo L fraud as he is, Code is still physically powerful. Unless you have some sort of space-time ability, you ain’t escaping. At which point Boruto can charge up another Uzuhiko to the level that it will one-shot you, walk on over and barbeque your ass. And if you do somehow escape, if you can’t dissipate it yourself, the effects stick until the planet’s gone. Long story short, shit’s broken.