[Raidou nods solemnly in answer to the question. Should he admit how much he knows? He doesn't know a lot of the details, surely, but Yuji told him everything from his perspective of that terrible night in Shibuya. Raidou will never forget it, and the overwhelming grief that poured from Yuji as he recounted it all.]

Hard to keep it hidden, after that. Things must have been quite different once the world learned what was happening.

[It would make things harder, he thinks, not easier. Overly curious or confident people who know nothing about the supernatural, or only things they read in legends or stories, who think they know what they're doing.]

At least secrecy isn't a concern here. [There's no way everyone on the planet doesn't know what a kaiju is.]