I Open a Funeral Parlor in a Strange World

The protagonist was originally a small owner of a funeral shop (wreaths, shrouds, one-stop funeral services) that was struggling in a modern city and was about to close down. After an accident (such as a lightning strike, the awakening of an ancestral artifact, or a funeral for an extremely strange client), he discovered that after closing every night, his funeral shop would quietly connect to a different world full of "weirdness" and "rules." This different world is not a traditional fairy or magic world, but a "weird world" composed of countless strange stories, ghosts, and unspeakable things, running all kinds of absurd and dangerous "rules." The "residents" (weirds) here also have their own social interactions, disputes, and... Deaths. After they die, they also need funeral services. The protagonist becomes the only "mortician" who can cross two worlds.