"Weird and slightly scary, contained objects, liminal space exploration, unlimited martial arts, refreshing writing, regular monsters, multiple female protagonists, light western fantasy race.
Behind the door is a chaotic space, as well as immortal and absurd isomers. The only thing we can do is to explore, suppress, and contain.
People have developed weapons that can fight against isomers - anti-sense equipment. By chance, Bai Ye activates the piece of equipment called "Nothing" that no one can control, awakening the power to extract weapons from monsters, but the preference of fate is just a knot that has been tied...