Refers to the protagonist growing older as the story progresses. Please note that this refers to their external age showing them to be older, as opposed to the million year old cultivators who still look young in some series. The story should cover the life of the protagonist as he/she grows old.
Left out during elementary school picnic. Left out during middle school camp. Left out during high school trip. I finally became a college student and what? I’m left out from the entire humanity? Yu IlHan who protects the earth alone while everybody’s away in other worlds. His legend starts after humanity comes back and meets the Great Cataclysm!