Ahh, not the usual happy go lucky Masako, is she?
Most don't really realize that she takes her work incredibly seriously- and a lot of people mistake her usually goofy and happy personality as the one she carries all the time. Though the truth is she still maintains some seriousness in her life as well.
In this drawing in particular she's using her first Shikai, Yin (which is just one half of Amaterasu).
You can guess what he embodies!~
Anyway, enjoys <3