What a fascinating topic! "Time Loop NTR -v1.40- -Kegani Laboratory-" seems to be a rather niche and intriguing subject. I'll propose a study idea that could explore this concept in a thought-provoking way.
Version 1.40, released as a significant patch to the original build, represents the most "complete" version of this nightmare. If you are looking for a standard dating sim, turn back now. If you are looking for a narrative sledgehammer to the chest that questions whether knowledge is power or a curse, then step into the time loop. Time Loop NTR -v1.40- -Kegani Laboratory-
If you are looking for a game that makes you question your relationship with control, jealousy, and sexuality, this is a masterpiece of the grotesque. If you just want cute anime girls, go play a Nekopara game. What a fascinating topic