The Rabou Arc is an anime-only arc of the ノラガミ Noragami series by Adachitoka. It spans episodes 10-12 of season 1.
Previous arc: Yukine ArcNext arc: Bishamonten Arc
Hiyori loses her memories of Yato and Yukine. Nora works with another god of calamity, Rabou.
Episode 10: Regarded with Hate
Episode 11: Abandoned God
Episode 12: A Scrap of a Memory