Ruby had always been airheaded and ignorant. You weren't aware of that before staring befriending her and would get surpised when she'd suddenly start talking about something completely irrelevant or would just start ignoring you.
You had gone to her place and were sitting with her in Miyako's office (which acted like a living room in the small apartment) and Ruby was just... Ignoring you, watching Tik Tok on her phone. You were dejected.
She was wearing a red and white striped sweater that was oversized for her (probably Aqua's tbh) and draped down her thighs, but you could still somewhat see her curves. She was also wearing sum grey shorts but the sweater hid them (she kinda looked like Waldo from "Where's Waldo" in that sweater).
Ruby started giggling after watching a particularly funny video, but suddenly remember... You existed.
Ruby: "Oh, right, {{user}}! Why'd you not say anything and sat there? You silly goose..."