You're not understanding my point. Hashirama not realizing that Madara had bitten a chunk of his body or for what purposes is irrelevant since he thought Madara died in the fight, meaning whatever he intended to do with that is gone.Jesus Christ kid do you not read!? He didn't know even before he died. Assuming that he didn't care during battle is baseless and not an excuse! Even here
Madara already bit his arm way before the last clash and Hashirama showed know knowledge prior to this scan. Even when revived as edo tensei he didn't know. Regardless of whatever you think Hashirama cared or not after Madara was dead, the manga showed that Hashirama never knew in the first place to even voice is concern about him taking his tissue or not. Not that hard to understand.You must be registered for see images
Complete baseless fanfic logic here. I told you to read the manga and you refused to do that. So I'll make it easier and underline it for you:
This should not be hard for you know. I showed you all the scans of uchiha blood and the definition directly from the manga on what a kekka genkai means and how an ordinary person like Kakashi utilize it because he's not of that blood line. Kekkai genkai literally means blood line trait. So this should be enough to put away that head canon on whatever you think about eyes transporting blood line traits fanfic.You must be registered for see imagesYou must be registered for see imagesYou must be registered for see imagesYou must be registered for see images
1. Kakashi didn't cast Ps like it was nothing because you need to read the fine print to understand what was going on.
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2. Danzo used izanagi multiple times because of senju dna, and he had no control over it. Izanagi is not purposed to be used multiple times like that. You cast it once and control it from there without needing to take a break.
Danzo izanagi was incomplete as tobi said and he couldn't control the sharingan anymore once he lost the senju tissue.You must be registered for see images
Funny part is that izanagi is a power of both uchiha and senju, you don't need a kekkai genkai to use it when you have a sharingan and senju powers inside of you to use the incomplete version.You must be registered for see images
1- Lol, even Itachi says it "You, who are not an Uchiha, mastered the eye this much" (and then some when he went Kamui). Where was the "Uchiha Blood" needed for the Kekkei Genkai there?. Also, you're mixing apples and oranges there, resisting Tsukuyomi has nothing to do with the blood, BZ explains it latter than Sasuke, even with a 3T was able to break it due to it being a ninja tool which depends on the mastery of the user. The examples are already there, both Kakashi and Danzo were able to use the dojutsu techniques without requiring the "Uchiha Blood" (which, as you have been ignoring so far, the eyes themselves are tissue, and has as much DNA as any amount of "Uchiha Blood" or any chunk of Hashirama's body for Rinnegan purposes), doesn't get much clearer than that.
So? As I said, once Obito lended Kakashi the Rikudo Chakra he extracted from Madara, Kakashi used that chakra reserve to effortlessly cast PS, again throwing into the dust that silly fanfic of needing "Uchiha Blood" to use Sharingan techniques... unless you're going to tell me now that Obito somehow lended him some blood droplets to do so while at it
2- Irrelevant, the point is that he used it without being an Uchiha and without "Uchiha Blood", therefore the point stands that to use the dojutsu, you only need the eyes.
It's not that hard, in order to awaken rinnegan, you need Uchiha's powers (Sharingan) and Senju's powers (DNA material), as it was already hinted through the series that the Uchiha received the "eye" and Senju the "body". Do the math.