New Tools: Nanogel Injection

After the accident caused by proton-exchange membrane fuel cell installed on Erika MK-I, the engineers at Lachesis Inc. resorted to relatively less efficient, but far safer bio-reactors to empower the subsequent models.

Erika can process and digest organic matter with her internal reactor, be it food or semen. With a dose of biofuel infused nanogel intramuscularly injected into her artificial pseudo-circulatory system, the user can also replenish her energy reserve rapidly without waiting for hours to recharge fully. The self-healing polymers will close up the pinhole in the blink of an eye.

tl;dr: Instead of using cheatcode to refill Erika's stamina, you can now use the syringe to vitalize her in the downtime of sex without needing to wait for the next day.