Board Thread:Episode Discussions/@comment-25787298-20160519120227/@comment-25283946-20160520165957

Supper Sasuke wrote: Asura is also Otsutsuki, but he has black eyes, we dont know Indra's eye color, because he always appears with Sharingan.

So, we can not claim that white color is Otsutsuki natural eye color. Asura and Indra are 1/4 alien(otsutsuki) and 3/4 Human