This was pretty funny even if very shonen.

You have a guy, Yuji Itadori, who is in a after school club about spirits and demons and such. But when they open the wrong package, a artifact that's cursed. When a demon/spirit attacks the school Itadori steps up but so does another fighter who can summon creatures to help. In the end Itadori swallows the artifact and crazy shit occurs.

The best part about this series is how fast paced everything is. The fights are quick, brutal at times, and pretty funny. This is mostly because the trio in this book can be pretty great. The world building works well too. However, the basic structure is the build of a secret organization that is hunting down these curses/spirits. Been there, but it's well done enough. A 3.5 out of 5.