Ginji must be the only person on the whole damn planet who doesn't know. Paul knows. Paul finds it funny as hell, though he never does more than arch a wry eyebrow in Ban's direction. Natsumi giggles behind her hand, cutely, and blushes when Ban glares at her. Hevn does, too, except she doesn't blush.
Shido and Kadsuki aren't blind, but it's not like they can make anything of it. The monkey trainer is completely trained himself, and the thread spool is knotted in a red thread so tight he couldn't break loose if he wanted.
Even Akabane knows. Sometimes Ban finds that amusing. Late at night it scares the hell out of him.
"Ban-chan, please?" Ginji asks, and Ban agrees.
Because this is Ginji, so it's not like he could ever do otherwise.