The Irregular at Magic High School - Yotsuba Succession Arc" ANIME MOVIE WILL RELEASE NEXT WINTER! New Info Reveal Tomorrow! The "Yotsuba Succession Arc" is covered in the original LN volume 16 by Tsutomu Satou. (Mahouka Koukou no Rettousei: Yotsuba Keishou-hen) Image © Kadokawa,Tsutomu Satou, "Mahouka Koukou no Rettousei: Yotsuba Keishou-hen" Production Committee