[@Raijinslayer]

Well for one he didn't notice anyone phasing through it because when he got there it had just finished closing up, and the reason it'll lessen the impact is because he can use the metal blades inside his robe to form a shield with four blades using them to for a strong repulsion between them and him lessening the impact and softening the blow, as for going fast, that just increases the chance if him going through (as stated he doesn't know people can phase through it) and as for the danger of phasing through blindly, once in he can easily stop himself, and if something happens as he goes in he'll be able to move around it, block it, etc. Trust me man I got this covered. ^^ I don't do things without thinking at least five steps ahead.