In "21 Seiki Manga Hajimete Monogatari," the character known as "Narration" functions strictly as an educational framing device without documented backstory or narrative development. Official media solely references a recurring "older sister" figure and the character Mogutan guiding viewers through historical events. This narration remains consistently tied to the series' educational premise, devoid of characterization, arc, or elaboration on origin. No evolution occurs across seasons, movies, OVAs, or spin-offs, as none are cited in available sources.