Does bitFlyer need KYC?

I've been looking into using bitFlyer for my cryptocurrency trading needs, but I'm not sure if they require KYC (Know Your Customer) verification. Can you tell me if bitFlyer does indeed have a KYC policy in place? If so, what kind of information do they typically require from their users? And is there a process or timeline for completing the KYC verification process? It's important for me to understand these details before I decide to use bitFlyer for my trading activities.