First of all, wouldn't call it an NTR game. At all. The girl is just your employee and she's just a slut. She can and will suck a guys dick, thank him for it and tell him the pain felt good even if you say "no, don't bathe with that guy". This is not NTR because she's someone you met like 2 days ago, have never seen in person and have no non-work relationship with.
Its a bit weird, since the game introduces aphrodasiac spores that could push her to this kind of action... if she didn'tjust gag for dick and ignore people molesting her baseline.
It'd only be NTR if the shopkeeper who clearly does crush on your hardcore was th one diving (who the mc seems not into for... no apparent reason. She's hotter than the actual female main)
The actual gameplay loop is... functional. You click around a map, you click icons to grab stuff, dive under water (grab stuff with a different picture) or open doors/jump over fences. That's really it. At the end of the map, you choose who gets paid what, but there's no debt or anything for you I can see so I just always gave the diver all but 1 cash. You can buy stuff in the shop but
A: The girl doesn't react if you do this, so there's no stroy benefit
B: The gameplayis braindead, i literally don't care about any benefit at all
The strength of the game really ist just the writing. Its nothing particularly special (and the girl being so happy to deepthroat cock underwater where she literally can't breathe out of nowhere is straight up jarring) but the characters are generally likeable. I wasn't bored reading any new dialogue.
I was bored reading repeat dialogue, like when you grab items on the floor. That should have an option to just turn it off. Entirely