Hkj
Thanks for the chapter. Don't make the mc too op. Instead, make the Naruto world more powerful in order to prepare the Ninja world to fight the Ōtsutsuki clan. Selling explosive tags does indeed increase the strength of these small ninja villages, but it's far from enough. The mc could also sell the explosive tag production method. Since his system is able to give the mc a technique that allows his clan members to turn their bodies into flames, that means he should be able to give him other techniques like the martial art Rokushiki from One Piece. I think Rokushiki martial art could train people to Jounin level according to their body's potential. Now imagine if he sold this martial art to every small country or ninja village. As it is a martial art, even Civalians will be able to practice it and gain strength. The stronger the body, the greater the amount of chakra. This practically elevates the strength of the Shinobi World to a new level. Also, since the Mc is more than 100 years old the mc can be consider to be an Ancestor. The mc need to start acting like an Old Monster and plan ahead.
I'll drop this if somehow Madara or black zetsu suddenly acquired kagutsuchi's cell! the flames around him should've burned all DNA flying in the air during their fight. don't do stupid things, I'm sure you nerfing Yamamoto's power already annoyed some of your readers so don't push us into dropping your amazing fanfic.