The protagonist easily forgets his parents. He is sent to a demonic school where the song itself is supposed to be eating humans. One could be fascinated by how the activities in the demon world will be and how he will survive so that no one discovers that he is human, but what takes away his grace is that they do the same as all humans.
All difficulties are solved with the power of your benefactor. The story behind never progresses. It is a pink world, coffee shops, where you have to go to classes, make friends and do physical activity. Iruma is literally made to play dodgeball like another high school boy in a chapter. Even later they will watch an entire chapter of demonic idols. All the characters are generic, none stand out and they even become too childish to be a demonic world. Where is the survival then? There is not. It is a school like any other.
24 chapters too long for what they count. And I have no doubt that there are many better schools to visit in anime.
