That Time I Got Reincarnated as a Slime now has a spin-off yonkoma manga! It’s different from the main story, and tells the story of Rimuru and friends in their daily lives. Milim Nava, one of the Great Ten Demon Lords, makes her appearance here! While she enjoys her stay in Tempest, Rimuru and the residents of Tempest look after her warmly sometimes and nervously others.