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>"Blood price? What's that?" asked Zach curiously. The others were just as clueless, but Bruce's face changed color upon hearing those words. He seemed to have heard about it as well.</p>

<p>"Within certain arcane practices, there exist rituals that demand a sacrifice from the mage in order to bring a spell to fruition. Among these dark rituals, the most prevalent form of sacrifice is that of human blood. It is a grim transaction, where the potency of the spell is believed to be directly linked to the life force offered in exchange. Only the most formidable and impactful spells necessitate such a substantial quantity of blood to be employed in their casting.</p>

Chapter 282 Blood Price