The Blue Angel, named Kashi Koi, is a sage of the feathers and the oldest known of all sages.
|Title||The Blue Angel|
|Date of Birth||Unknown|
|Age||Thousands of years|
|Occupation||Sub-leader of the Lushan Resistance|
|Relations||Poseidon Sangami (childhood friend), Tenshi Keramat (student)|
|Fighting Style||Feather Sagecraft|
|First Appearance||Chapter 1: 10 Years Later|