Haruka (Prisoner 01)’s MV visuals depict violence on dogs and other animals. “Weakness” heavily implies Haruka killing a dog with a rock, but a carcass is not shown. “All Knowing And All Agony” briefly shows several animal bodies. Neither song’s lyrics allude to animal death, but it is still a major part of his crime.
While the final punishment for being voted Unforgiven is ambiguous, a few major characters (not named here as that’s a huge spoiler) died between trials.
a slight chance for kazui. the cat mv makes it to where it is most likely that his crime was he kept his sexuality a secret from his wife in hopes it would "just go away," and him telling her the truth drove her to suicide. the two most likely identities are either he's gay, or he's aromantic (which is where the possibly aphobia comes from.)
burning alive is depicted in the Backdraft MV, happening to both futa's victim and futa himself, although it's not actually occuring to the characters.
Mahiru is mentioned to have broken several bones as a result of Kotoko assaulting her, and is shown in her sprite with various casts to reinforce this.
While Yuno is depicted falling from a height in the Umbilical MV, this is largely symbolic and she survives. So far no one has been confirmed to die of falling.
at least 3 character's victims died by suicide; futa's victim, mahiru's victim, and kazui's boyfriend. mahiru's victim's suicide is shown in the mv for I Love You.
a character with confirmed DID has the "evil/murderous alter" trope. however, we still don't have the full context to his crimes, and it could've been an act of protecting the system/self-defense.
Haruka has an unnamed disorder (implied to either be a developmental or learning disorder) and is frequently depicted as violent. Mikoto has DID, and his alter “John” is portrayed as especially violent.
As of Yuno’s Trial 3 report, she’s confirmed to have technically miscarried. While interpreting her miscarriage as at least somewhat purposeful is common, it is labeled technically as a miscarriage.
possibly; yuno's only crime is her abortions, which could possibly be anti-abortion. whether that meaning having anti-abortion themes is intentional or not is unknown.
As of Trial 3, Shidou’s family have been confirmed to have all died in a car accident. This accident is not shown on screen, but was the catalyst for Shidou’s crime.