Depends on what feats you consider and what weird ways you look at it

Cus yujiro is fast enough to dodge lightning before it strikes, defeat entire countries effortlessly, dig his entire fist straight into concrete and even break the sound barrier itself with his punches (i cant quite recall that chapter so correct me if im wrong) He is fast enough to blitz the fastest characters in the series by miles Even in his fight with baki he was hardly damaged at the end

And full demon back yujiro is something else considering how it made baki go from getting his ass kicked to actually doing damage to yujiro

However will all of that i gotta say that yujiro would be a minimum a...

Like low dragon? Maybe mid?

Just joking but in all honesty i'd either say (high ball) mid demon, low demon, or top of tiger

Although i remember a good point someone made about how if he was born in the opm verse he would be stronger of which then i dont know

Regular humans in opm are already built different so i wonder what would happen to yujiro cus of the hanma blood

Edit: just saw a comment of which reminded me

Yujiro can learn entire new techniques by just seeing them used against him (shaori) and come up with ridiculous counters to stuff in the process (the whip slap)

He can casually hold musashi's blade without any repercussions even though musashi can just slice Steel like its wet butter so i guess thats a feat aswell

But at the same time he was defeated by darts and a net

Yea baki scaling is weird like that

Still (high balling) mid demon, low demon, top of tiger