Where the anime ends, and where the books carry onAnime, manga, light novels and web novels, lined up by story arc

Arc Almanac

19 Sep 2026Draft. Not yet checked against the books.

All series / Oshi no Ko / Arc 1

Arc 1 of 11 in Oshi no Ko

Arc 1: Childhood

I’ve watched through

Season 1 covers this arc.

Season 2 covers this arc.

Season 3 covers this arc.

What happens

A rural obstetrician who became an idol fan through a dying patient is hired to hide a pregnancy for the singer he follows. He and that patient both wake as her twins, Aqua and Ruby, and grow up backstage until a stalker ends the life they were sharing with her. The agency takes them in, and Aqua starts hunting whoever fed the killer their address.

Where it sits

Childhood in Oshi no Ko
FormatWorkLanguageUnitsVolumes
MangaOshi no KoJapaneseChapters 1–10Vol 1
MangaOshi no KoEnglishChapters 1–10Vol 1
AnimeOshi no Ko—Season 1, episode 1Season 1

Draft. Not yet checked against the books. Report a wrong mapping.