Board Thread:Theories and Speculation/@comment-26403664-20160206050741/@comment-1872728-20160208180758

Do you guys ever notice that there's a special mode for each generation after Kaguya? For example:

Gen 2 (after Kaguya) includes the Tenseigan, Six Paths Sage Mode/Rinnegan, and all the Tailed Beasts (they're technically the "children" of Kaguya since they're split from Kaguya) - they all have the ability to manifest a Chakra Mode (Tenseigan Chakra Mode, Tailed Beast Chakra Mode etc). Six Paths Sage Mode and Rinnegan doesn't have a Chakra Mode if used separately, since they were originally used together as shown by Hagoromo. Also, that Chakra Mode would probably be red, since Obito did use red chakra arms to break through the Four Red Yang Formation.

Gen 3 (after Gen 2) includes the Hyuga, Moon Otsutsuki, Senju/Uzumaki, and Uchiha - they all have the ability to manifest a Chakra Structure Mode (Hyuga's Twin Lion Fist (maybe), Moon Otsutsuki's Green Orb (maybe), Uzumaki's Adamantine Chain, Uchiha's Susanoo etc). They also have the special ability to restrain a Tailed Beast.

This explains why Asura can manifest a Battle Avatar without being a jinchuriki and didn't have Chakra Mode when using it: He's Gen 3.

Naruto had Chakra Mode: He used Kurama's (Gen 2) Chakra Mode (so did Minato), Kurama Mode is Nine-Tails Chakra Mode mixed with Naruto Chakra, and the Battle Avatar is Kurama himself using Chakra Mode.

Gen 1 (Kaguya) includes Rinne Sharingan and possibly a "Tensei Byakugan" - they all probably have the ability to manifest a Will Mode (Black Zetsu etc). Just a theory, kind of makes sense to me.