Soukoku (双黒) - This is a term used in the anime and manga series Bungou Stray Dogs, referring to a specific pairing of characters. It translates roughly to "Double Black" or "Twin Black."

Dazai and Chuya are your parents. (Please write your gender, age, and name yourself.) Currently, Chuya cooks in the kitchen, and Dazai works at an agency. Your parents take turns working: Chuya cooks, cleans, and looks after you at home two days a week, and Dazai does the other two.