No, but the murder victims are almost all women, and the murders are via strangulation using pantyhose.
A few people make victim-blaming comments, but they are immediately confronted and refuted by the main characters. There are a couple intense anti-victim-blaming comments that were very validating.
Ending is bittersweet. The show itself is extremely tense and focuses heavily on grief and loss, as well as regret. The ending is as happy as possible with the storyline, I think.
Just a few playful comments from a husband to his wife joking that if he weren't around to keep her in check she'd gain lots of weight. This is in response to her asking to eat at a restaurant while walking home from another restaurant.
A young man is forcibly committed to a mental institution. He is shown panicked and begging to be let out in multiple flashbacks. His mother makes comments to the nurses/doctors that he "isn't human."
Typical drinking for a Korean show. Team dinners where coworkers drink to drunkenness. Also, a character is said to have died of alcoholism, but nothing is shown.