73 episodes of getting almost nowhere. Forget about the mediocre art for a moment, the real problem is that behind it is a story stretched so thin it makes a slice of cheese feel like a brick wall in comparison. Everything about World Trigger screams "cheap filler".
Do you have even the slightest capacity to reach logical conclusions? I've got bad news for you, this entire show will tick you off by tripping itself up every few minutes. The best example would be how they somehow pretend that the most basic of combat training that you can learn in 60 seconds by even having a brain and changes you from being instantly defeated to having a fighting chance... wouldn't be taught to ANY student for the first YEAR of their combat training, because that's the "advanced" stuff for year two. Had this happened once I would have been forgiving but it happened all the time because there is almost nothing being taught to any of the students at all, the stuff they pretend to learn in 3 years even your average real life student could learn in 3 weeks.
The next issue is that not only do they drag out every single insignificant little thing for as long as they possibly can, the "recaps" are so excessive in length that they take up a big chunk of the actual episodes and by the end you've watched 60 episodes worth of what barely qualifies as content and 13 worth of recaps. I wish this was a lie, it's not.
The few saving points are occasional laughs, the characters staying consistent (even if some are utterly useless and have such severe learning disabilities they wouldn't last a week in elementary school) and there actually is a decent plot in the background, even if it only shows up every few hours and it would have been fine to shorten the entire show to 20 episodes.