I played this highly purchased and highly rated NTR game on dlsite.
https://www.dlsite.com/maniax/work/=/product_id/RJ381706.html
I had to remove it after getting 2 hours into it. Just wasn't doing it for me. The premise is the elf Isekai went to Japan into and is living with MC in MC's apartment. You control FMC, the elf, and you're suppose to work to raise money to buy some magic stone to get back home.
The game could've been better if it was in the POV of the MC, but as FMC, you have complete control of every single sex scene in the game.
There is no relationship between FMC and MC, unless you do the tedious chore of buying an item, gifting it to the MC, and triggering a "love" event to progress "romance".
It's the same for the other 3 men that's suppose to "cuck" the MC. FMC has to manually buy gifts using her own money, gift them, and seek out the 3 men for sex.
There's no cucking here. This is not an NTR game. You have complete control. The MC does not actively pursue you. You, FMC player, decide to suck and fuck the 3 dudes. 4, if you count the MC. MC never professes love for you, tries to woo you in anyway.
The game is a very "programming-light" game where there's no real nuance. It's the same thing for 4 guys. It's really disappointing when bad games like this makes a ton of money.