Board Thread:Theories and Speculation/@comment-6769189-20200705100921/@comment-46279039-20200712193244

UltimaDude, The Last was not written by Kishimoto. However Toneri is an Otsutsuki, and Otsutsuki's can create TenTails. Also Isshiki in Boruto has one. Tenseigan was created with energy of many byakugan, like shinju trees collect energy on planets. TSB are just spheres of powerful compressed chakras, it is not surprising that in the Toneri transformation there is something similar.

I don't writed that becoming TTJ maximizes the power of rinnegan (but of course yes, rinne sharingan, more chakras available, infinite tsukuyomi lol). I have talked about the awakening of Six Paths chakra in general.