If he doesn't, I'm to get half of whatever you'll sell for at the nearest ship running under a red sail.

[He doesn't come out and say it directly, but hopefully Akashi hasn't been so sheltered as to not realize he'll have bigger problems than simply being kidnapped. Once he were put on a ship, it would be near-impossible for anyone to find him. Mayuzumi gives Akashi a nudge to the shoulder with his boot.]

Of course, if you don't think he'll pay, we can just skip straight to Plan B and save us both the time of waiting.