I Can, And So, I Will

Minor Treasure—Mud Ball!

Minor Treasure—Drifting Tunnel!

The moment the stream of bone invaded Astral World through the hole, a field of gravity impacted it, acting against it, prompting it to flow outside. At the same time, an array of Mud Balls slammed into the hole and erected a dome around it.

Mud Ball had no other property other than acting as a seal. And in this situation, it was pretty helpful. As Resha was fighting on multiple fronts, his invasion into the Astral World wasn't strong. His priority was to transform Brangara's body into a cage trapping the Astral World.

Following that, he could take his time invading the Astral World with full force. But of course, he couldn't go full force due to the Minor Treasures of Gracious Inheritor and Linked Rupture poised calmly in the Astral World.