The day starts early for Hell raven Reiuji Utsuho.

Ghireiden The final ん (-n) is tilted and given an extra line so it looks like そ (so), so it reads "Chireideso".

Her first job of the morning is to light the Underground Capital's artificial sun.

Then there's one other thing...

Cawwww-ka-doodle dooo! literal

There's no special meaning to this behavior.