Except Sakura isn't hitting him, and even on the off chance that she does nick him she's doing more harm to herself than she is to him. Even in Byakugo, Kimmi can run circles around her and Katsuyu both. Especially seeing as he's healthy in this scenario.
This is the key so that you may follow the wording within this thread:
Saisei no Jutsu = Regeneration (Romaji interpretation/Passive Self-Healing)
Shikotsumyaku = Dead Bone Pulse (Kimimaro's Kekkei Genkai)
Kimimaro Kaguya is rather underestimated when measuring his capabilities on this forum, the usual "Top Three Regenerators" consist of Hashirama, Tsunade, and Base Kabuto; the list should be the following:
1. Current Kabuto 2. Kimimaro 3. Hashirama/Tsunade
The placement, and final conclusion of Kimimaro's positioning will be evaluated by showing Kimimaro already possesses the capabilities that of Hashirama, Tsunade, and Base Kabuto, while highlighting the extra capabilities he possesses regarding his Saisei no Jutsu.
The Case Of Healing Without Hand Seals
The first requirement to become noteworthy within the "Top Three Regenerators" is Self-Healing without Hand Seals, something only very few (less than four I believe) can accomplish. This alone puts any Shinobi capable of Self-Healing via no Hand Seals around the Top 5 Medical/Healing Shinobi.
Hashirama/Tsunade both possess the capability of Self-Healing without Hand Seals:
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Kabuto Yakushi as well possesses the capaibilities to regenerate without Hand Seals via focusing chakra into the predicted spot targeted by the enemies technique, which on contact begins healing immediately:
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Kimimaro Kaguya also possesses the capability to regenerate without Hand Seals passively (meaning no previous technique has to be activated, as well Kimimaro doesn't have to directly focus on regenerating; it comes naturally):
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Kimimaro seemingly possesses Requirement #1: Self-Healing Without Hand Seals, so I'll now move on to Requirement #2.
The Case Of Chakra Depletion/Hayflick Limit
Chakra depletion is by far one of the greatest disadvantages of Self-Healing, to be classified as "Top Three" material for Self-Healing one must possess one of the two requirements:
Having Senju/Biju/Huge chakra levels.
Possessing a Saisei no Jutsu that requires little, to no chakra.
Kabuto Yakushi is dropped from the Top Three due to this hindrance alone; as Base Kabuto does not possess Senju/Biju chakra levels, along with the taxing of his own Self-Healing Technique; In'yu Shometsu:
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Tsunade's case is quite different as she possesses both requirements, the downfall of her technique however, is the Hayflick Limit; the number of times a cell can split into a number of divisions:
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This is a great disadvantage toward Tsunade herself as the ultimate conclusion is death. Not only that, but the limit (time wise), in which she can use this Self-Healing Technique isn't lengthy at all, noticing the side effects soon after activation:
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Kimimaro possesses both requirements; possessing Senju/Biju/Huge chakra levels (he took on thousands of KN Clones, Drunk Lee, and Gaara all while being sick, and on the verge of death; this distinctively shows his huge chakra levels) , as well having a Saisei no Jutsu in which requires little, to no chakra to Self-Heal himself.
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The way I've come to the conclusion that Kimimaro's Self-Healing isn't chakra taxing as Tsunade/Kabuto's Saisei no Jutsu are is due to the innate capability to continue passively regenerating while Orochimaru's Juinjutsu was active:
With Kimimaro fulfilling Requirements #1, and #2 I'll move on to the feats, which put Kimimaro above Self-Healing Users such as; Hashirama, Tsunade, and Base Kabuto.
The Case Of Kimimaro's Superiority Within Self-Healing
This is what puts Kimimaro above Hashirama, Tsunade, and Base Kabuto when referring to Self-Healing; added with the facts that Kimimaro can passively Regenerate without Hand Seals, as well having huge chakra levels, and a less taxing Saisei no Jutsu. Kimimaro is the superior in Self-Healing due to:
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Kimimaro's Kekkei Genkai allows him to control not only the bones within his body, but allows him to control the reforming of destroyed cells. This is similar to that of Tsunade's technique, but without the taxing death toll:
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However, it's not only the fact that Kimimaro possesses the capabilities to control his cellular reproduction, but the speed in which he can create his bones/cells. Many Self-Healing Users claim their Saisei no Jutsu are "Instant" (when I say instant I mean that the injury is healed that very second it is caused) however, it is often never shown. Tsunade is the only Shinobi in which has shown near "Instant" healing via the use of Byakugo no Jutsu:
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The flaw within Byakugo no Jutsu is that it still has the disadvantage causing death to the user if used for a length period, similar to Tsunade's Sozo Saisei; The Hayflick Limit:
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Anyways, back to Kimimaro. Kimimaro is the only Self-Healer in which has shown the capability to regenerate instantaneously from an injury/causality:
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Kimimaro in the previously shown panel is seen removing his spine, this is a crucial sign in which shows he can regenerate instantaneously. To realize why this is, one must know what the spine's role is within the human body:
Pay heavy attention to every underlined portion of the quote previously given; more so "The body cannot replace cells lost when the spinal cord is injured, and its function becomes impaired permanently.". This backs up the statement of which Kimimaro iterated "he can control the reformation of his destroyed cells".
To furthermore prove Kimimaro's regeneration was instant in the case of replacing his spine, if his spine wasn't replaced once it came out of placement when he pulled it out, he would have become crippled, and would have fallen from his standing stature; the body is able to stand erect due to the spinal cord.
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Thus, the new list regarding "Top Three Regenerators" should consist of the following:
1. Current Kabuto
2. Kimimaro
3. Hashirama/Tsunade
Hopefully everyone takes this into consideration, and stop underrating Kimimaro's potential, hope you all enjoyed the read.
Edit:
I've revised the positioning after some thought, I don't think Hashirama should technically be above Tsunade as he is only hype when it comes to Self-Healing, Orochimaru as well isn't on the list due to not showing Self-Healing feats greater than the Shinobi above.
