Dusk Diver originally released in 2019, and was developed by JFI Games, a seemingly obscure (or perhaps just small) game studio from Taiwan. I wasn’t able to find much info about the studio other than that they worked on a mobile card game called Bound Strike at some point. A direct sequel, aptly titled Dusk Diver 2, was released in 2022.
Dusk Diver focuses on high school student Yang Yumo, on her summer break in the Ximending district of Taipei, Taiwan. During an average shopping outing with her friend Yusha, the two are suddenly transported to an alternate version of the city, known as Youshanding, and attacked by monsters called Chaos Beasts. Yumo is assisted by Leo, a stone lion Kunlunian Guardian from the spirit realm. In the heat of the action, Yumo borrows Leo’s spirit energy and fends off the monster threat, but finds herself unable to re-disperse Leo’s powers back and maintain her non-fiery-haired normal form. After being introduced to Boss, a mysterious researcher Guardian trapped in the form of a ceramic bear, Yumo reluctantly agrees to work for Boss’s convenience store in exchange for possible assistance in returning to her normal self. As Yumo becomes more involved in investigating supernatural incidents in Ximending, she’s later joined by two other Guardians: Bahet, a bat Guardian slowly learning the ways of the human world, and La Viada, a fish Guardian and popular model and actress.