Character designs: 8/10
World building: 6/10
Story telling: 3/10
Abillitys and powers: 1/10
This shit is overrated as fuck. The last time I have seen such bullshit powers and story telling was with Nanatsu no Taizai...
It's ok if they can take a lot of damage, it's a shounen afterall, but it's clearly stated that they are just regular humans. The breathing technicks should be some kind of super power, but it's treated like it is.
The fights are so long and boring, nothing matters because in this manga the enemies have plot armor but the heroes win anyway with some last minute ass-pull.
And that end fight is one of the most dissatisfying endings I have ever seen...
If it's not that fancy animations, nobody would give a shit about this garbage.