User blog comment:B214/Volume 22 spoilers/@comment-9595671-20160814045836/@comment-9595671-20160814061436

I admit it, I could be very wrong about this, it is only a gut feeling. The last volume could easily prove that Trihexa isn't coming back.

Maybe I'm just feeling we had all that build up only for it to be around for just one full volume. I just hope we can get a villain that can give a similar threat during this arc.