Of course he figured Ken wouldn’t have considered something like this. Chikusa knows, which is why he’s made the effort to speak up about it at all. It’s how things have been between them for as long as he can remember: Ken acts, and Chikusa thinks.

...Good thing he’d been conscious in this case.

In response to Ken’s question, Chikusa shrugs. Frankly, he doubts their rings are really good enough for anything right now. As the technology progresses, he has no doubt that Mukuro-sama will keep them right on its tail so that they always have some measure of edge, but for right now… “There’s nothing else like the Vongola rings… The boxes might only match up to them.” A specific key for a specific lock. As far as Chikusa is concerned, it’s better to be safe than sorry.