Having trouble remembering the name. I remember the mc moving into an apartment and you could go around town? I think there might've been a nun character too. Also there was a scene where the mc is with a mother and daughter at the pool in the apartment. Not sure if the mc has amnesia, a dark past, or neither. Lastly I think the mc was offered the room to the apartment by a woman.
3D
Can't remember if it was VN, Sandbox, or both. Mostly likely Sandbox
I think it was RenPy, but it could've also been Unity
Last I played it was 2 years ago?
Hope that helps