An old convenience store clerk caught in a class transition, he seems to become the strongest by using extra skills that were not necessary for a brave man.

Old men are in a period of popularity! The story of an old man and a black gal who survive in another world by combining a large number of skills that are scheduled to be discarded, and the prosperity of a convenience store in another world!

Old men are in a period of popularity! The story of an old man and a black gal who survive in another world by combining a large number of skills that are scheduled to be discarded, and the prosperity of a convenience store in another world!