User blog comment:B214/Question and Answers 6/@comment-29362784-20161001024143/@comment-9595671-20161001084324

Actually, I think Shiva said he could destroy it, but the problem is that to achieve that he'd defeat the main purpose of doing so. Basically if he did destroy Trihexa he'd destroy everything else too. I think that's also what he meant by full power Ophis and Great Red having the power to destroy Trihexa, they're the only ones who could do so without risking the rest of Earth as a result.

I get a good feeling that Cao Cao's realizing in hindsight how bad his choice back in Volume 11 was now, no point in the Hero Faction's purpose if Trihexa destroys them and the world.

I mean if Ophis was at full power, they could just move Trihexa into theg gap, have Ophis follow and knowing Great Red he'd not like Trhexa staring at him and... boom, the two end up destroying the beast. It really shows just what damage that Rizevim did, cause I think in a way he was always the true Khaos Brigade leader.