different_minds

Zach was a sci-fi game enthusiast who unintentionally crossed over to a magical isekai. Fortunately, he had access to the previous game system and could fight the magic-savvy aborigines with high-tech weapons.
“Magic? No, I have the lightsaber. ”
Unlike what he expected, the system presented him with a different way of leveling up. He had to get some kind of special energy from the pretty girls' bodies on this planet so that he could unlock his weapons.
"What the hell happened? Is my sperm capable of upgrading girls? Can my blood cause those girls to burst out instantly?"
This was incredible.
The succubi were a hated race in the magical isekai because they oversucked male sperm and killed men, but not Zach.
Surprisingly, the majority of the special energy that Zach required was distributed in succubi.
He appeared to be having a fantastic journey.

Release That Succubus

<p>"It is not something important. This is only a poor quality resource used as a burning material by the majority of the masses who are unable to use magic. But there is a problem in its usage that diminishes its value as a fuel source. The thick black smoke it produces upon burning can mar any infrastructure and color it black. Moreover, the unpleasant smell and poisonous substances emitted during the burning process lowers its value in the eyes of those who have sufficient buying power. Only those who cannot buy better products like firewood opt for this cheap and difficult to use fuel." Bruce gave a long explanation regarding the fire water as he felt that Zach must be a young master of some hidden force and he might not have seen such a thing before in his life.</p>

Chapter 90 Oil