Mechanical Danger or Narrative End?

Inc House  is intended to have a ticking time element where Lincoln's Soul is being drained from him by the demon possessing him. I have an idea of how to implement this however I don't know if it is a fun mechanic for a lewd game.

Version 1 - Every night Lola will drain an ever increasing amount of Lust. If you cannot outpace this drain you will die. Mastering this means you will be a true Incubus.

Version 2 - The drain is mainly narrative. After 30 days the game will evaluate if you have succeeded in freeing yourself from Lola's curse. Multiple endings depending on accomplishments.