In the actual sense of this category, why are y'all saying no? The literal opening case (around this episode? Forgive me if it's a different one following, haven't seen the anime in ages) has the prosecution present cheating as a motive for the defendant murdering his girlfriend. Granted, it's never backed up, but still.
A character walks into a room while someone is showering in the next room over. We hear the shower running, and the character we are following leaves the room before the other character enters the room
Not necessarily. The series was created as a critique of the court system, and there are several lines about how "You shouldn't trust cops" and "Joining the force for a gun explains a lot about the police force". However, the series does lean heavily into the legal system, so if you find that upsetting, be wary.
A main character fakes his suicide but is later shown to be alive and well. There are also minor characters that are mentioned to have killed themselves, but it is never shown on screen (with a minor exception being the feet of a body for a brief moment)
No, but there are a few mentions of suicidal ideation as throwaway lines. One character is believed to have killed themself, but this isn't true. One character mentions that they considered suicide after the death of a family member.
In the fifth game, one woman says that she "wanted more than just respect as a coworker" regarding a colleague that had passed on. Nothing is said about if these feelings were reciprocated, however, so I think the answer is still no.