Within the isekai genre, this anime subverts the genre and breaks away from the usual boring standard. We begin with the story of a protagonist who, after being run over, is reincarnated in his delusions and dreams, a dimension where he is an eminence, a kind of god, everything revolves around him, and in burlesque tones, parodies hackneyed harems, romances, and generic isekais but in its own way. I like how the story is told through the protagonist, who suffers from eighth-grade syndrome, as it is known in Japan. That's why culture shock and not being open to it can ruin the experience of watching something, but it is what it is and it works. When the theory of dimensions is revealed, it makes sense that in this universe, there exists a combination of eras in the architecture of buildings, objects, clothing, types of beings, etc. These are realms that have collided and influenced Cid's realm. It takes itself seriously, without taking itself seriously, is a rather interesting and original premise.
The fantasy and magic themes are just McGuffins, a narrative excuse to tell a story, the protagonist's delusions and how he creates his own story, in a world where they do exist. It's not necessary for them to explain everything to you, nor the power scales, nor why he's so strong, nor those over-expositions that fighting shonen usually have.
