I think the premise and concept are interesting, but I'm a bit lost when running through the gameplay.
If the goal of the game is to make the player manipulate the social relationships then I feel like the limit of 3 questions and then you're done with the date becomes really limiting in the available interactions you can have. If the goal of the game is to be a mystery-solving deduction game then I didn't encounter a lot of objective evidence about what happened during the crime to make good guesses.
I played two full play-throughs. Trying to be flirtatious with my dialog ended up getting social interaction responses that didn't have anything to do with the crime, but being direct in my dialog got a lot of dead-end answers that didn't give me new information. Ideally I was looking for conflicting information between different people, but they all seemed to not want to say anything about the crime.
I took a guess on Granny the first playthrough due to her inability to just answer questions about her project and her removal from the scene of the crime after a heated discussion with the victim, but the game seems to want me to believe that answer was wrong.
I took a guess on Steven the second time through primarily based on him being a jerk that didn't want to say anything other than "cooking is a woman's work", which avoids the actual conflict of the murder entirely. The game seems to want me to believe that answer was correct, but I didn't have any objective information that would incriminate him so I feel a bit of a hollow victory.