So you mean a focused blast that destroyed those summon-sized trees fired at Hidan's spine didn't crush his spine, yet it destroyed these trees with ease? Seems legit. Obviously it crushed his spine and every bones in his body yet he was perfectly fine afterwards.
She could barely stand after taking these hits
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While it's like Hidan isn't even affected
Also, Tsunade only got impaled by a thin a sword, how is that impressive? the rest was only sword slashes that didnt hit her bones Her bone structure was still intact for the most part.
Hidan's ribcage was crushed by two big weapons, then crushed again by his spear, then his stomach and spine was impaled twice by his scythe and then his whole body got pierced
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Hidan's bone structure got messed up, Tsunade's didn't.
Also it nowhere says that Byakugo increases her strength, nowhere in the wiki and the manga does it say that