The author then kindly explained it by the end of the chapter 11.
I mean, before, the motif was the 12 western constellations, then someone wearing 4 guardian beast-shaped accessory appeared, then it would be possible that next would be the 12 chinese zodiacs...
Also... the one I thought was Aquarius was actually Virgo?? well, that dark pink tone indeed suited Virgo than Aquarius tho...
and Glasses bro was Cancer as expected.
#the fumbling of the one who cannot read chinese characters