Your game is one of the coolest graphics out there from what I have tested so far. it is veryy cool and it looks like it is cut from a manhwa WHAHHAHA. you guys did a very good job. I like the story and the setting. I get the trust no one part really well, It doesnt need a tutorial either because gameplay is very direct and is explained verywell at the start.
some suggestion. maybe add a progression system? inwhich you get to solve more cases later on basically add more stages add more stakes. currently there are no reward and punishment system in the game just straight up gameover and there aree no benefits if you get the vampire on the first round before he kills anyone. maybe work on that abit more, in the first round of questioning it is very hard to maintain all the good people alive because the vampire will kill one person after you asked a third question, you dont get to ask them all at first. maybe you can implement a way like day 1 ask them all 1 question and there will be a day 2, inwhich there will be only 3 left in the cell and ask them again. like that WHAHHA maybe its just me?
anyway goodjob to you and your team you guys did a wonderful game. Congratulations and Thankyou for letting me review it.