A technique relativing to nighttime as he does have morning peacock and afternoon tiger. It would make sense for his next move to be called nighttime something I'm gonna bet it's nighttime hyena
It will be both. Afterall, to use these techniques, he needs to use the gates. If i'm not mystaken, he used morning peacock while he was in the sixth gate, afternoon tiger while in the seventh gate. The logical conclusion would be that he uses a technique related to nightime while in the 8th gate.