That Time I Got Reincarnated as a Slime: Trinity in Tempest

That Time I Got Reincarnated as a Slime: Trinity in Tempest (2020–present, Kodansha USA) follows three original characters—a knight, a merchant, and a ninja—as they navigate life in the monster nation Rimuru built. Running for 10 issues, this spin-off series expands the world of the main manga by exploring everyday adventures and political intrigue from fresh perspectives. Written and illustrated by Tae Tona, it offers fans a lighter, character-driven look at Tempest's bustling society.