Sankaku Head Reveals New Himouto! Umaru-chan Manga Posted on September 28, 2026 By admin No Comments on Sankaku Head Reveals New Himouto! Umaru-chan Manga Umaru-chan 100 debuts on Young Jump+ on October 1 Source: https://www.animenewsnetwork.com/news/2026-09-27/sankaku-head-reveals-new-himouto-umaru-chan-manga/.242242 Manga