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

Placing his hand on the forehead of the patient, Zach asked the system, "Help me analyze his condition. What's the problem with him?"

After a few seconds several notifications blocked his view and the *ding* sounds reverberated in his ears.

[Subject is critically weak and his physical body is on the cusp of shutting down. The lack of blood has pigmented his skin a pale yellow.]

[After a thorough diagnosis it is confirmed that the subject has been suffering from leukemia for a long period of time. The subject's body is showing an adverse reaction to all the unknown means that have been used to stretch the life expectancy of the subject.]

[Late stage leukemia is a very serious affliction and it is almost impossible to cure it in this world even with the help of magic.]

Chapter 163 Invites Distrust