@hyzza This part of the manga may or may not have been out just a tiny bit before Trigger really started releasing much of anything. The time frame is a bit hard to tell without looking it up way more than I care to. However, the point is, Trigger may have been pulling a Gokukoku no Brynhildr if we just have to give some sort of credit to whichever one did it first out of the two.
But with that pedantic nitpicking out of the way, was that a particular Trigger work you're referencing or something general about a lot of stuff they've done? I'm trying to think of what it is off that alone but it's been a while for a lot of their stuff I've watched and honestly I'm bad at remembering stuff (great "talent" for being able to enjoy rewatching things?)