Lone Wanderer Across the Heavens: Starting with Bright Sword

(Drawing Sword + System + supplying equipment + worlds-hopping, with no dumbing down or mindless antics)

After an accident brings him to the world of Drawing Sword, he obtains a System. At first, he thinks he'll have to rely on his own strength to make waves in this world of resistance against the Japanese, growing stronger through the System and so on.

Then he meets Li Yunlong. Well, compared to killing Japanese soldiers on his own, it seems more profitable to supply Li Yunlong with equipment and collect captured puppet troops for a reward. And so, Li Yunlong's money man is on the scene.

Li Yunlong: Old Liu, I'm broke. Three men don't even have one rifle between them, and each of us has fewer than three bullets...

Liu Shao: Say no more. How about a thousand Water-cooled rifles and a hundred thousand rounds? Bring over some prisoners so they can help unload the goods in a bit.

Li Yunlong: Old Liu, our firepower's still a little weak. Also, we've got quite a few puppet troops in captivity.

Liu Shao: Got it. Mortars, light and heavy machine guns, as many as you need.

Li Yunlong: Old Liu, I captured a thousand puppet troops.

Liu Shao: We're making a fortune! Old Li, your artillery's still a little weak, I think. I've got a real treasure here. Ever heard of the Three Treasures of Guerrilla Warfare?

Kong Jie: Old Li, that's enough. You've poached three guerrilla squads from my area, and your regiment's already 3,000 strong. What, are you trying to become a brigade commander?

Japanese Regiment: Quick, send a farewell telegram and burn the regimental flag! Our unit is under attack by ten regiments, and they've even got an artillery brigade!

Also known as A Lowlife's Journey Through the Myriad Worlds