Well let’s see, according to Wikipedia, there are tons of mythological creatures that take after birds. Though if Ryukishi says that even the title is spoilery, I’d assume that were going to have a FFXV/Bravely Default situation in which the title changes at a certain point, or the creature of focus could be a Chol, Sirin, or maybe just a pigeon considering the city focus. I still want a Nightingale though.
Hmm, it’d be interesting to see Ryukishi tackle an ‘open world mystery,’ considering basing a mystery around a large area can get difficult…But I expect some sort of twist.
I do hope we get new info soon.