Now while I could go on for hours just making up fluff scenarios and interactions between Nine and Mangey (and fun fact most of my headcannons stem from putting those two in a room and than thinking further) the first two weeks until Nine got sorta used to living with ppl he was a bit of an intentional dick
G throws their arm around Seven's, pulling them close. Seven's face twists with reflexive discomfort before it changes into surprise, and then nervousness. It's an expression identical to yours whenever you're in proximity to G Reign: the unique awareness that you're next to your idol. "What would our duo be called?"
"A nightmare," [redacted] says the same time [redacted ii] screeches out a happy: "Grammy nominated!"