Chuunibyou will never get old. In all kinds of meaning.
Also, see? That is how tou take full advantage of isekai tropes without writing boring story. Put everything into rightful perspective, make reader see characters point of view and cause proper emotional responce! First chapter if a masterpiece of exposition art. We don't even have time to think too deep into the lore or find random flaws, we are too busy having fun.
Also going all over the top helps.