P. S. World setting = Heaven and Hell + Interstellar + Sentinel Guide = Skyrim Sentinel.
Some people say that guides and sentries are destined to be lovers.
Lucifer smiled, broke the man's neck, and replied arrogantly: "No one can match me."
Later, that person accidentally became Lucifer's spiritual body...
Lucifer: "Tsk, it's an honor. You are the only one in the world who can gain my unreserved trust."
Xiu: "Well, my soul belongs to you, and you will always be with me."