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

That Time I Got Reincarnated as a Slime: Trinity in Tempest is a manga side story that views the monster nation of Tempest from the perspective of three female visitors. Instead of retelling Rimuru's rise, it focuses on how outsiders encounter the city's strange comforts, rapid growth, and everyday absurdities. That narrower lens gives the work its own identity within the larger Slime catalog.

For readers, the appeal lies in a light blend of adventure, comedy, and fantasy, with a female-led cast and a mild content level. The series can feel like a guided tour of a familiar world, mixing cute character moments with occasional darker notes. It rewards curiosity about how Tempest functions beyond the main conflict.

This manga is likely most approachable for readers who already enjoy the Slime universe or who prefer low-stakes fantasy with an ensemble of girls. Newcomers may still follow the broad strokes, but the richest experience comes from knowing the setting. Its ongoing 2019 run makes it a companion piece rather than a replacement for the core story.

Set in the monster nation of Tempest, this spin-off manga introduces three visitors: Phos, a fox girl; Stella, a dragon girl; and Nemu, a winged girl. They arrive in the thriving kingdom established by the slime Rimuru and are amazed by how quickly it has grown into a prosperous society for all monsters.

The story follows the trio as they explore Tempest and become entangled in its everyday happenings. Their distinct personalities and backgrounds lead to a mix of comedic and heartfelt moments as they interact with the kingdom's residents and learn more about this unique world.

While their visit begins with wonder, the girls soon find that life in Tempest is not without its challenges. Together, they must navigate the unexpected events and mysteries that arise, forming bonds that will shape their experiences in this new land.

That Time I Got Reincarnated as a Slime: Trinity in Tempest is a spin-off manga within the wider Slime franchise, which began as a light novel series written by Fuse and illustrated by Mitz Vah. It stands alongside the main manga adaptation by Taiki Kawakami and a growing group of companion titles, including The Ways of the Monster Nation and The Slime Diaries, rather than continuing or retelling the central adaptation of the novels.

The series started in 2019 in Monthly Shonen Sirius, the Kodansha magazine that also carries the flagship manga version, and it takes its premise from the light novels while following its own trio of characters. Because it presents a side story set around the monster nation Tempest, it can be read on its own, though familiarity with the parent series gives extra context to its setting, tone, and cast of supporting figures.

Its availability through K MANGA, Pocket Magazine, and Nico Nico Seiga places it among the franchise's expanding translated offerings, a secondary thread rather than a replacement for the main storyline.