Board Thread:Versus Debates/@comment-34938099-20180728104553/@comment-26107879-20180730040116

@Brain

"When activated, any part of the user's body that overlaps with another object is seamlessly warped to Kamui's dimension, making it appear as though the user can phase through solid objects.[15]" Kamui

Obito can only go intangible when apart of his body makes contact with something. Either that or the entire war arc is a plot hole. That is due to the fact Obito would of been able to grab Naruto a long time ago like in the instance where Gai came from behind to attack his head. All he would have needed to do was make his headed intangible. But the hand that was connecting with Naruto was also made intangible since both happened at the same time. If Obito could have controlled it, he would of just made his head intangible and grabbed Naruto as he intended and kamui'ed away.