This has always bothered me about Naruto's worldbuilding.
Haku had one of the most absurdly useful Kekkei Genkai we've seen, especially for someone who was basically a nobody from a small village. Ice Release gave him insane mobility, defensive options, multi-directional attacks, and the ability to fight through his mirrors in ways that were genuinely difficult to deal with.
And then he dies... and apparently everyone just moves on. 💀
Like, we're talking about a world where villages are constantly trying to steal information, develop forbidden jutsu, experiment on people's bodies, transplant abilities, and create biological weapons.
Orochimaru literally spent years experimenting on Kekkei Genkai, and the Hidden Villages were willing to do some insane shit just to gain military advantages.
So you're telling me nobody thought, "Maybe we should figure out how Haku's Ice Release works"?
Even if you can't perfectly recreate the bloodline, you'd think someone would've at least tried to reproduce the techniques or develop artificial versions of them.
And this gets even weirder when you remember that Ice Release isn't some god-tier ability like the Rinnegan. It's a Kekkei Genkai belonging to a relatively obscure clan.
So was Haku just insanely unlucky to be born with an ability that nobody bothered researching?
Or is this another example of Naruto's worldbuilding where characters have ridiculously valuable abilities and the entire shinobi world conveniently forgets they exist?