A modern internet celebrity travels back in time to the 1980s and wears the body of a chubby heroine. Two years ago, the heroine married the grandson of her grandfather's comrades, who is also in the army, because of the promise made by her grandfather and her comrades. Now that she has passed through the time, she takes the place of the original owner and takes good care of her grandparents, lives a good life with her husband, loses weight, and makes money. Wait... I seem to have a system, but I don't actually want to use it, but the system guy really knows what I want.