This is a very strange story. . . . This is modern warfare, but there will also be things like Jinyiwei. In short, this world is both familiar and unfamiliar to everyone. □□ Is the most powerful empire, competing against it is the Federation of Northern Columbia (FNB), the European Strategic Union (ESU) and the Tsarist Empire. The protagonist is the descendant of the defected Jin Yiwei.
Then maybe you will see the shadow of Metal Gear Solid, Black Lagoon, Gunslinger Girls, Call of Duty, etc. This is not considered plagiarism, I am just being lazy. . . . Anyway, I beg you diehards not to complain. The story has three protagonists.
By the way, the keywords actually include brothers, clones, father and son, etc. . . . If you only read romance, I don't have much here. . . .