In a situation where chance and necessity are intertwined, the world is composed of two parts: common sense and what cannot be understood by common sense.
Due to the plan of the superior, two people without any grudges met.
Due to the malfeasance of relevant departments, two people who had never met also met.
Due to the mixing of unrelated persons, they. . . Anyway, we met.
Space war, gun war
close combat
intelligence war, conspiracy war
Split personality battle
Of course, the most important thing is the battle for RP between white authors and black authors.