Why Boruto's Rasengan Uzuhiko Failed Against Jura?

Hey guys!

Today, let's discuss about one of the biggest mysteries in Boruto: Two Blue Vortex — Why didn’t Uzuhiko work on Jura?

I've seen a lot of theories floating around, and after going through the manga panels and comparing Uzuhiko to both the normal Rasengan and the Biju Bomb, I think we finally have a solid explanation. So let’s break it down!

• Uzuhiko, Rasengan & Biju Bomb — What’s the Difference?

We all know the basic Rasengan: it's chakra compressed into a spiraling ball — no hand signs, just raw control.

Now, Uzuhiko is a step beyond that. Boruto's Uzuhiko isn't just chakra — it's pure planetary spiral force. Basically, it taps into the rotation of the entire planet to generate its power. That's insane when you think about it!

And here's the link to the Biju Bomb — which also draws on a planet's natural energy. Whenever a Tailed Beast like Kurama charges a bomb, it unknowingly taps into the planet's energy too. That means planet matters.

• Science Behind the Power

Here's something that clicked for me recently:

The bigger the planet, the stronger the spiral force.Imagine Kurama A on Jupiter and Kurama B on Earth.Kurama A's Biju Bomb would be way more powerful, simply because Jupiter's rotation is stronger.

Now take both Kuramas off-planet, like on the ISS. Suddenly their bombs would be equal — because they’ve lost their planetary connection.

That's the same concept behind Uzuhiko. If Boruto isn't fully synced with the planet, or doesn't have enough time to let that spiral force charge up, Uzuhiko will flop.

• Why Uzuhiko Failed Against Jura?

Here's where it gets good.

When Boruto used Uzuhiko on Hidari, it worked perfectly — probably because he had enough time and full contact with the ground to let the planetary force flow into the Rasengan.

But with Jura? Nope.

Here's why:

A. Jura Understood How Uzuhiko Works:

Jura isn't some mindless monster — he's the Jubi with a will. He can think like an OTSUTSUKI, and he understands natural energy on a deep level.

Boruto (Manga): He's (Jura) aligning himself with the planet's rotation… That’s why Uzuhiko doesn't work!

B. Jura Synchronized with the Planet: He's basically MATCHED the planet's spiral force — so Uzuhiko had no opposing force to act against. Imagine trying to spin a top on a surface moving at the exact same speed — it won't spin, just slide.

That's exactly what happened here. Uzuhiko's spiral tried to dig in, but Jura's body was moving in harmony with the planet — no resistance, no damage.

C. Boruto Didn’t Have Enough Time: Uzuhiko relies on contact time with the planet. It needs a moment to Charge Up by syncing with planetary chakra.

Boruto barely touched Jura — it was a quick strike, unlike the more prolonged hit on Hidari. So the Rasengan didn’t have time to build up its full potential.

Let's summarize everything:

Uzuhiko's Weakness:

1. Planetary Sync: If the enemy aligns with the planet’s rotation (like Jura), Uzuhiko becomes ineffective.

2. Contact Time: If Boruto doesn't stay grounded long enough, the Rasengan can't charge fully.

• Final Thoughts

So no — Uzuhiko isn't weak. Far from it! It's one of the strongest Rasengan variations ever. But it's very situational. Against regular enemies, it's deadly. Against someone like Jura? You need more than raw power — eed strategy.

What do you think? Was Boruto just unlucky with Jura? Or is Uzuhiko too limited to be a reliable ultimate move? Drop your thoughts in the comments — and if you love these deep dives, hit that like button.