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

But what the Luther family, including Diana, did not know was that the reason behind the new cheerful look of their master wasn't the increasing strength or influence of the family in the city affairs but the restoration of his ability to walk again through Zach's help.

If not for Bruce's wish to keep it a secret, this kind of news would have been enough for a city wide celebration in the name of the Luther family but alas this wasn't the time for that. First Bruce needed revenge for his current condition and the deteriorating state of the Luther family. His sister was working towards that goal in her way as she constantly trained to become stronger. Bruce too needed to put in his part of the effort to save his home and his sister.

Bruce began making friends since the social standing of the Luther family had increased somewhat after the news of the Sosis family's loss at the hands of Luther family was leaked by some trustworthy sources.

Chapter 69 Newcome Tamer