Gray Tide University

There is a school in the world that is only open to "Spiritual Beloved Lords", called Gray Tide. It is hidden in the folds of the city. The school gate is hidden in the fog all year round, and the school is filled with gray fog, separating people into isolated islands. The identities of the teachers are a mystery, and they carry "arms" that are different from ordinary people; there are no textbooks in the classroom, and they only teach "unspeakable things"; the students walk alone in silence, fearing that even the sound of footsteps will disturb the existence in the dark. There are no clear rules here, but there are taboos everywhere - don't approach the archives at midnight, don't accept notes from strangers, and don't ask "where does the gray fog come from?" Some people say that the Gray Tide is a prison for aliens; others say that it is a fortress that protects secrets. But everyone knows that everyone who steps here has an obsession that they can't let go and the answer they are looking for.