Well, I used the 'data release function' so I have all the CG's... (I wonder if I accidentally ''broke'' the game by doing this and that's why I can't trigger his ending anymore T-T)
Try replacing this save file to get the initial Haruki Madness end (same location as where the patch is applied)
https://drive.google.com/file/d/1_WErkPRUq6Kje_8pp5OV7cM5B-xFrL2R/view?usp=drivesdk