An anime with a great concept, about a great hero that has fallen from his power level after saving the world and then trying to live a normal life. The only issue is that it fails to deliver in showing any great plotlines.
The concept of a great hero having to go to school after he lost his powers and then just want to live his life, can make for some exciting scenes. But it fails to show this, and instead often shows how the main character still can handle all enemies with a single hit. Which completely destroys the concept and possibilities for development. So you end up with a character that they say is weak, but still can do almost anything.
If you look at all the side characters is there close to non character development, after they have been introduced. The side characters get an episode that shows who they are and has a small amount of development for them, but afterwards there is basically nothing. Which isn’t helped by the amount of side characters they introduced throughout the series.
The only positive for the anime is the last two episodes, which actually shows something interesting. There is an actual plot, some sort of character development, and there is actually something on the line suddenly. But sadly is that not something that was shown through the rest of the season.
So overall would i not recommend it, since it fails to deliver on an otherwise promising concept. Maybe if it gets a second season that follows the style from the end of the season, could it be something worth watching.