KADATH's Under Mythos Adds Cthulhu Horror to a Cat Onsen RPG
KADATH is trying to run a small, creator-first production house that pulls staff from several studios as needed, and Under Mythos is the test case for whether that model can deliver an original JRPG.
Reporting from 1 source: 4Gamer.net.
KADATH, a production company founded in January 2026, is working on Under Mythos, a dark fantasy JRPG planned for 2028 on PC and Switch. Yoichi Miyaji leads it; Atsuko Nishida designs characters. The player is a cat searching for Mother who ends up working at a Japanese hot spring inn, with a Cthulhu mythos world beneath the calm. Matrix, Liz, and Taiwan's iSWEETY are among the developers helping.
The game opens with the cat waking in a snowstorm, walking into a cave, and finding a Japanese hot spring inn on the other side. That inn is where the work happens: serving guests and exploring dungeons for ingredients.
Miyaji said the concept came from wanting a Cthulhu mythos game and an indie-scale project at the same time, citing DAVE THE DIVER and Cult of the Lamb as games he watched while thinking it through. The pitch he settled on was Cozy and Crazy, cute characters in front and something frightening behind them.
Synthesized by Yomimono from the 1 cited source below, including Japanese-language reporting where cited, then editorially reviewed before publishing.