Thread:Mangetsu20/@comment-4509522-20120429010642/@comment-4326112-20120430003543

Well...The Shiba Crane Cannon was said to be one of the only ways to break into the Seireitei past the Sekkiseki wall, but I've seen in a number of Unofficially-Canon related movies they did where if enough physical force was put behind it, the gates would smash, or if a highly pressurized Spiritual Energized projectile hit the shield, it would be able to penetrate it for a moment.

Seeing as Ultharon is a freak of nature when it comes to the scale of his power, I think the Eraser Cero can blast apart the gate as well as a ten meter section of the Sekkiseki wall that was proximate to it.