Board Thread:Versus Debates/@comment-31337598-20180202202814/@comment-34223563-20180204125727

Thekillman wrote: Lorenzo.r.2nd wrote: well, hiruzen couldnt do it to orochi who is close to him in power, so if minato tries to do it so casually to someone about 100+ times stornger than him, the probablity of kurama just plain old resiting is very, very high. Doesn't matter. Minato wouldn't have to use RDS, so it's not an issue. Eight Trigram Seal is enough.

Besides, Hiruzen couldn't extend the arm of RDS either, and Minato could. So seems to me that comparing those two is pretty pointless in that regard.

Minato knows that "Uchiha Madara"

(in quote as it was actually Tobi/Uchiha Obito)

will definitely pose danger, and Naruto would need extra power to fight Madara. Thus he planned to put the less dangerous part of Kyuubi (the Yin part) into Naruto using Hakke no Fūin Shiki (Eight Trigrams Sealing) on Naruto because he wanted Naruto to slowly get accustomed to Kyuubi's power. This was done by deliberately designing so that the seal would weaken overtime, so that slowly, bits of Kyuubi's power would leak and be accessible by Naruto. Of course as a safeguard, he also gave the key to strengthen the seal into the toad Gerotora and left it with Jiraiya. Other than that he added an extra security measure by sealing part of his chakra into Naruto and make it so that it would activate if Naruto was about to turn into Kyuubi and re-seal the Kyuubi.

As noted by Killer B, the seal used on the Kyuubi was of greater quality, thus better sealing strength than Tekkou Fuuin used on the Hachibi. It is reasonable to say that Hakke no Fuuin Shiki was the strongest sealing technique that Minato knows that he can modify so that it weakens a long period of time.

So, the reason why Hakke no Fuuin Shiki was used with Naruto was clear. Now, to the meat of the question. Why didn't Minato seal the other half of the Kyuubi that he sealed into himself with the same seal and instead opted to use Shiki Fuujin.

Shiki Fuujin was a very strong sealing technique. It was thought to be unbreakable since the technique seals the life of the intended target and caster into the Death God's belly. It was only after an extensive research by Orochimaru that he finally discovered the way to unseal it.

Minato used Shiki Fuujin to seal the more evil, thus more dangerous part of Kyuubi into himself using Shiki Fuujin was probably because he believed that no one can/would be able to discover how to unseal it. Since he was dying and the Shiki Fuujin doesn't weaken over time, the seal was perfect to be used to seal the Kyuubi, making sure that the Yang part of Kyuubi would never shows up on the world ever again.

As can be seen with Nohara Rin's case, if a Jinchuuriki was killed, the Bijuu would also die and would be revived at a random location after a while. This is also consistent with the fact that Akatsuki would only weaken and not kill the Jinchuuriki before extracting the Bijuu.

If Minato used Eight Trigrams sealing to seal the Kyuubi into himself, as sealing the whole Kyuubi into Naruto was not possible since Naruto was an infant, the sealed half of Kyuubi would return to the world after Minato's death, which is should be avoided, as that half would likely to target Naruto to get the other half back. That Yang half would also be in danger of being hunted by other ninja villages and the Akatsuki. That is why Minato opted to use Shiki Fuujin, so that it would be sealed permanently.Now back to the question,Sage Mode Minato vs Tendo.Minato was watching the whole fight from within Naruto.. he saw everything from the past 16 years. I don't know if the memories of his chakra deposit clone would be transferred to his actual self though.Minato could simply mark all the Six Paths of Pain with his Flying Thunder God Technique and transport them outside of Nagato's range of transmitting chakra and win automatically.Well Naruto beat Pain with support, knowledge of their abilities and Pain at a disadvantage so. Minato has FTG. That can be basically the big issue. Sage Mode too but the Deva has Almighty Push. Pain took on a jinchūriki before and defeated it (Utakata) so just cuz Minato has Nine-Tails' chakra doesn't give him the upper hand. Minato would have gl worry about several opponents including summons such as the dog they don't poof away. Naruto was lucky the toads was there. Minato may be able to defeat Pain Sid mid to high difficulty.