I Worked Myself to Death, Then Came Back to Do Whatever I Wanted

[No dumbing down + no female lead + ruthless decisiveness + cunning + behind the scenes + slice of life] Xie Jue, who worked himself to death in his previous life, is reborn and, as is customary, gets a System. No missions, only rewards! Stir up trouble and you generate energy! As long as the System has enough energy, The Host can do whatever he wants! Want a car and a house? Done! Want money and power? Done! Want incredible strength? Done! What? You want to transmigrate through the myriad worlds, too? Sure! … Xie Jue smiles faintly, and his heat vision turns every little Japanese bastard in front of him into an old friend. Xie Jue smiles faintly again and hurls an aircraft carrier into space, achieving air travel in the literal sense. Xie Jue smiles faintly once more, then can't resist poking Earth apart with a single finger. Xie Jue smiles faintly again… Xie Jue rubs his face. He can't keep smiling. If he smiles any more, his mouth will get crooked…