Do you think some natural ghouls would be able to pass through the RC Gate?
We know through Eto that the rc signature the gate looks for can be passed down genetically. Yoshimura was V, so the Washuu had allowed the gates to let him pass, and we saw that Eto herself was able to pass through the gate.
But the RC Gates aren't just for V and the Washuu. Publically, their "main" use is to be programmed with the rc signatures of all quinques.
But wouldn't that mean that any family member of a deceased ghoul made into a quinque could pass through the gate?
The Arata Armor exists, and Narukami is theorized to be Hikari. Could Touka and Ayato both pass?
Tatara, because of Yan?
Tomoe, because of the Bin Brothers?
Or perhaps it's only rc signatures that are extremely similar. Yoshimura and Eto's kagune look visually the same, and he even purposely mimicked her owl form for years.
Meanwhile, Arata was a koukaku while Touka and Ayato are ukaku. Hikari may have had a similar ukaku flame, but judging from what we know of Yomo's kagune, and the possibility that Narukami and T-Human are the other 2 Yomo siblings, then its possible Hikari's kagune didn't much resemble her kids'.
But Hinami's is a near-identical copy of both of her parents, who are both separate quinques. So she'd probably be an exception, even if the others couldn't pass through.
That's a pretty glaring but very interesting weakness. And because of the Washuu secret, I doubt anyone outside of the Washuu would know its even possible.
