OK here is my opinion. Below average...
CGI is below average. Lighting is poor, giving a plastic look to me...
Story CONCEPT is above average. Investigations sound fun!
Story execution is below average because the writing is poor. Creating fake dilemmas to force naughty scenes. NPC motivations are really juvenile.
Dialogue is below average. Characters dialogue is unbelievable. Also have a few syntax errors here and there. Missing capitalization is a common occurrence.
Characters feel like tropes. The main character especially.
Body portrayal of women seems ok and sort of varied, but exaggerated. Sister more looks like a daughter...
Male bodies look awkward. Like to make the men muscular, it also made them all look fat.
Clothes are average I guess. To skimpy for real immersion, but par for the course for an adult game. Actually they get pretty bad, and scream poor fan service.
The timed case mechanic just irritates me to be honest.
One great thing is this game has some seriously intro play time.
Overall I think this is forgettable. Great premise but the execution holds it back.