Something that all isekais fall into these days is being very generic, eg you can have a template for it. MC is killed / dies and gets reincarnated into a fantasy world where they are severely stronger than everyone else, its up to them to save the world, etc you get the point. But our boy Kongming isn't interested in any of that. He just wants to devote himself and his knowledge into helping Eiko (someone he sees has great untapped potential) succeed in the modern day music industry.
Banger OP, banger song sung by the main character, and if I do dare say, we as viewers have been trapped in the stone maze to watch this anime for all eternity.
