War of Resistance: I'm an SS-Rank Assassin, Slaying Enemies with Bright Sword

[Alternate history + behind-enemy-lines operations + special forces + the spirit of Bright Sword...] July 7, an ordinary yet extraordinary day. Mo Leng, an SSS-rank assassin serving under the Nightfall Legion, is carrying out a mission in North America to execute a fugitive executive when an accident occurs. By sheer chance, he falls from a tall building and transmigrates to an unexpected world. July 7, 1937. The Marco Polo Bridge Incident erupts, and the Japanese launch a full-scale war of aggression against China. The land is in turmoil, and the people are plunged into misery. After transmigrating to this world, Mo Leng wastes no time in embarking on the road to resistance and the destruction of the Japanese invaders.