This had an interesting concept. Guy punches stuck up boss/big bosses son for acting like a power tripping brat and is faced with potentially everything the brats dad can throw at him. Is being taken off to containment when he is offered to be Isekai’d to become a dungeon lord. (I personally would have looked for another job) it looks like it was mainly world building and him getting his new life together. Enjoyable but at the same time not at that 100%.