Spoilers Warning for Studio Wasabi Fans if didnt play the game. I was gonna have Kou as the antagonist (cause he Tried to Bribe in chapter 7 after being exposed as the wolf.) But Nah.
Bittergiggle: well. The killer needed to get out of the mansion to the sewers, kill nabbit, and get back to the mansion without being seen by Anyone, including the gold watchers. And according to 1 dread duckies testimonys, the whole group of duckies were taking care of Doom duckie at the time so there was no witnesses. So if picky did try to go do the crime, the gold watchers would've been the key witnesses. So we need to investigate this case further