WITCHRIV debuts on October 23Shueisha 's Shonen Jump+ platform announced that One Room of Happiness ( SACHIiro no One Room ) creator Hakuri will launch a new series WITCHRIV on the platform on October 23. Image via Shonen Jump+ © SHUEISHA Inc. All rights reserved. Hakuri ended the One Room of Happiness manga with the 11th volume in December 2022. Square Enix published the first volume of the spinoff manga in September 2019. Source: Shonen Jump+