After an accident, he opened his eyes in another world governed by rules-based horrors.
A role-playing System forcibly binds itself to him, and instances open one after another. Every rule could be a deadly trap designed to lure him in.
As he struggles to survive alone, a figure enters his field of vision.
Though they have never met, he feels an inexplicable familiarity deep in his heart.
He doesn't know who the other person is, but he knows one thing: "They" can never be separated again.