Shortly after designing Amazing Chocolatier, Zambumon got to work on two other sets. The first was Nautilus, a Twenty Thousand Leagues Under the Sea–themed set with a bold blue colorway. The second was much more subtle, and didn’t yet have a name. What it did have was a colorway made up of creamy beige alphas, golden yellow modifiers, and black legends. Now, after years of fine-tuning, GMK Serika is finally here. The set gets its name from designer Zambumon’s interest in the Japanese manga series Space Brothers (Uchuu Kyoudai). Itou Serika is the main character’s love interest, known for her intelligence and passion for helping others.