Thanks for the ref. Yes, the base idea of having health and lust in a "slay the spier"ish game is not so new. I played a bunch of those. However, none of them did a good job with organically blending sex into the gameplay. Also, most of them or maybe even all of them (including Lost Chapter) can't be called good in general.
This game shows a very strong base, so strong that I would like to invest.