In Great Sage's recollection, all seems to be smooth sailing for Tempest... but then the oldest of the Demon Lords, Milim Nava, arrives! Rimuru, as Milim's bestie, is appointed by the majority to be in charge of keeping an eye on her. With no knowledge of this, Milim explores Tempest and interacts more with the residents of the city of monsters... and Rigurd keeps track of all the damage she causes along the way in a report for Rimuru. "Rigurd... are you angry?"
Elenco: Rumi Ookubo , Miho Okasaki , Chikahiro Kobayashi , Asuna Tomari , Sayaka Senbongi , Taro Yamaguchi , Mao Ichimichi , Rie Tanaka , Hochu Otsuka , Makoto Furukawa , Junichi Yanagita , Kanehira Yamamoto , Jun Fukushima , Takuya Eguchi .