I created a profile just to say this:
I had to stop playing the game at certain points because the progression of the story hit too close to home.
I know exactly what it feels like to be ruled by paranoia and jealousy. To have the unquenchable desire to control everything and everyone around me to protect myself from hurt. To have those "doomsday" scenarios running through my head over and over with no end in sight. I'm getting better these days with therapy and medications but back in my youth I had huge issues with my self esteem and my self worth.
I'm not "yandere" but I did see parts of myself in the MC, I needed and required constant reassurances that i was loved by my friends and family and if i didn't get that then I would enter moods of extreme depression or rage.
The difference between me and the MC is i wasn't able to be talked down before I destroyed relationships, I just have memories of the people who have since cut me out of their lives.
I don't care for the "yandere" trope because it holds a mirror up to my life, but I am glad I played this. To others it was probably a gripping emotional tale about an unstable person coming to terms with their control issues and jealousy but for me it was absolutely real.