Naruto: Return to Earth

After an accidental return to his birthplace, Hamura saw all the different kinds of descendants in his family and remarked, "Are you all so wasteful because you want to make sure I find out?"

Hamura, head of the Otsutsuki main family, Kaguya's second son, and the Sage of Six Paths' younger brother, taught us through his life that:

You don't have to listen to Mom.

Bratty kids must be given a good beating.

Black Zetsu has to be beaten to death.

"So, brother, your way of raising kids must be flawed."

"Is that so? Then let's have a serious discussion about how you grew up."

The dangers of being a hopelessly incurable brocon.

Our goal is world peace!

Sorry, my imagination runs wild.

Since I originally imagined the Sage of Six Paths as a redhead, this story supports the red-haired version of the older brother: no beard, and not an old man.