Under Mythos is the first project from KADATH, the new Tokyo studio founded by producer Yoichi Miyaji, and it is planned for 2028 on Nintendo Switch and PC via Steam. The game is a dark fantasy JRPG where peaceful life at a hot spring inn sits beside dungeon expeditions, resource gathering, and action-based combat against beings twisted into grotesque forms.
The story follows a lone cat wandering into another world in search of Mother. There, the cat finds a mysterious inn where the inhabitants of the strange realm come to rest and recover. Hoping to be reunited with the figure it has lost, the cat begins working at the inn, welcoming guests and caring for a daily routine that already feels ready to break.
The sharpest hook is the collision between comfort and nightmare. Days at the inn begin with charming characters and a calm rhythm, but the story gradually turns that familiar world into something unpredictable and consumed by madness. That contrast gives Under Mythos a clear identity: a JRPG where peaceful spaces matter because they make the collapse around them feel harsher.
The main loop alternates management and exploration. To serve the guests, players leave the safety of the hot spring inn and enter dungeons throughout the otherworld in search of food, resources, and rewards. Returning safely lets those findings support and expand the inn, leading to new encounters and experiences that can open the way toward deeper expeditions.
Combat will be action-based, with the cat facing enemies transformed into disturbing shapes as the world changes. KADATH is currently preparing a vertical slice designed to show the intended quality of the final game, including its visual direction, audio direction, and core mechanics. The project is therefore still early, with the studio seeking partners for future development.
The creators make the reveal more notable for Japanese RPG fans. Atsuko Nishida is involved as graphic designer and illustrator after work that includes Pokémon designs; Takumi Miyajima is writing the scenario after credits including Tales of the Abyss; Noriyuki Iwadare is composing after GRANDIA, LUNAR, and Ace Attorney; and Miyaji brings production experience from LUNAR and GRANDIA.
Players tracking Under Mythos before its 2028 release can save it through the Playority Calendar, where upcoming games can be followed on a personal account. That makes it easier to monitor platforms, release timing, and customized updates when new information about the project becomes available.
