Boruto's byakugaun in one eye proves something

[pulkit singh]

That one eye has some kind blue shade below it which shows that it has been planted in him as far as I think it's the eyes of himawari and this also means that their are still byakugaun secrets which we are not aware of that's why it has been given this importance and other thing is that kawaki and boruto trained under same circumstances or together at least that's what their similar marks show

 

[Sagebee]

I'm not sure what you mean by the blue shade part but honestly at this point could of got the eyes from anywhere it could be his or someone else. I'm personally of the view it belongs to him

 

[SixPathsMike101]

I would sathat that blue shade tatoos both of them had is just some sorta new ninja tech