User blog comment:EvanDude345rv5/Fairy Tail 333 Review : Ultear FTW !/@comment-4829046-20130603022545/@comment-5580383-20130603142637

It was a joke for starters, it wasn't intended to be be serious.I basically made

Yeah because having the power to beat Unohana as a kid but not as an adult makes prefect sense right?

Unlike Kenpachi's mental barriers which is not only the lamest way for a power increase but Kubo expects me to believe that a much smaller, much less experienced Kenpachi was stronger than his much more skilled and larger adult self. Sakura on the other hand makes prefect sense given she was trained under the Legendary Sannin and spent most of her offscreen time training to achieve and master the Yin Seal technique which would take years to achieve and think about it, Chakra control combined with constantly trying to increase your physical strength and power while having to be a healer on the side is no easy task.

I'm not saying this wasn't without fault though. I still feel that Kishimoto could've done a bit more to explain Sakura's training regiment and make it more clear that this was something she couldn't use back in the Sasori fight and Pein Invasion but at least it's a valid enough excuse for a powerup and actually develops Sakura's character as she has to overcome the fact she had no Kekkai Genkai or Tailed Beast to rapidly increase her strentgh and this is what makes this retconned strentgh work.

I actually think it was very cleverly done. He wanted to give Sakura a power boost so she could do something in this fight, well, she doesn't have a Tailed Beast like Naruto, nor does she have an Eternal Mangekyou Sharingan like Sasuke, so that left Kishimoto with very limited options for her powerup. And so he chose to give her Tsunade's Yin Seal which was genius. The Yin Seal is all about Chakra control, and Sakura has always had tremendous control over her Chakra as heavily impiled druing the Land of Waves arc when she can easily do water walking and tree walking while Sasuke and Naruto lacked that control.

Saying that Sakura has been saving Chakra for 3 years, and is finally releasing it works great for a few reasons. It doesn't introduce any random new skill for her since Sakura's always had great Chakra control, it's not an ability that she can just whip out in every fight since she has to save up Chakra to use it and since it actually has good reasoning behind it, it's not really an "asspull" and is actually one of the best powerups I've ever seen in manga.

Yeah the Yin Seal retcon/power up was a brilliant move by Kishimoto that was an act of genius that is the polar opposite of the terrible Kenpachi mental barriers retcon. Looking deep into it, it's not just the fact that alot of chakra has to be conserved and Sakura can't just abuse it, it's an S rank justu that requires several years to achieve and master. Also it was a brilliant way to show off Sakura's excellent chakra control and really thinking back to the past, i would've never saw this kind of thing coming. Also it's another excellent example of how Kishimoto leaves small foreshadowing aspects only to use them much later to much greater effect as seen with the small references to Obito being Tobi which i almost completely ignored or wasn't that touched apon until the retcon/revelation of him being alive.

Kenpachi's mental barriers on the other hand does the very opposite. Kenpachi doesn't go through any character development, he doesn't have to struggle that much to gain power, hell he just pulls power out of his ass within the most contrived, poorly methods of rectonned powers. It doesn't make Kenpachi badass, it makes him boring for you know that all his fights have no depth and he can just pull shit out of his ass. Granted Naruto and Sasuke have their share of bullshit asspulls but it's never as poorly done as Kenpachi's mental barriers.

Kenpachi's power up was completely bullshit and unbelievable in every way because it not only contradicts everything regarding his previous fights with Bleach but unlike Sakura who has to save up chakra for 3 years while training to home her physical strength and chakra level while healing people, Kenpachi doesn't really need any skill or additional training to beat anyone for even the most skilled or most powerful warriors would still fall to the bullshit No Limits Fallacy mental barriers bullshit that ruins any credibility of Kenpachi being a badass. Sakura on the other hand goes from underdog to complete and utter badass within a second and with very little discontinuity.

Also am i suppose to buy Kid Kenpachi without any effort or any skill can overpower and beat Unohana but Adult Kenpachi has to struggle against Unohana despite being much larger, having more size and strength or supposed to be stronger than a kid and having much more skill ? Sakura on the other hand  trained to  learn an S rank justu without any special Kekkai Genkai power powers above an ordinary Shinobi and was able to  succeed due to  skill and  started off a pitifully weak fighter but  trained with one of the most powerful fighters within her  world and exceeded  even her teacher.