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

Arc Almanac

3 Oct 2026Draft. Not yet checked against the books.

All series / The Irregular at Magic High School / Arc 17

Arc 17 of 21 in The Irregular at Magic High School

Arc 17: Sudden Change Arc

I’ve watched through

Season 1 stops before this arc.

The Girl Who Summons the Stars stops before this arc.

Season 2: Visitor Arc stops before this arc.

Season 3 stops before this arc.

Yotsuba Succession Arc stops before this arc.

What happens

Tatsuya works on a method of containing parasites while another military confrontation develops. Strategic magicians become central to Japan’s response.

Where it sits

Arc 17 in The Irregular at Magic High School
FormatVolumesUnitsLanguage
Light novelVol 27Vol 27Japanese
Light novelVol 27Vol 27English
Manga — Sudden Change ArcVol 1Vol 01Japanese

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