Aoko Kori

"Ah, yes...You think you can go back and save her without any negative repercussions, do you!? Doesn't your feeble mind comprehend the action of returning to that night!? If you do, terrible things will occur, catastrophes beyond your wildest imagination! For that reason...I've been assigned by the High Marshall to stop and detain you, no matter the cost!!"

- Aoko Kori, to Gai Nagareboshi Aoko Kori (コリ=青子, Kori Aoko, lit. "Strengthening Blue Child") is a major character in Part II of Bleach: Rising Phoenix. Otherwise known by her monkier, Gakishi (牙輝, "Fang Knight") Aoko is a member of the Royal Guard's Time Squadron, which investigates cases involving the alteration of time. During the first timeline, she is absent, but when Gai Nagareboshi uses Straight Flush to revert Soul Society's time back to zero before a crazed and jealous Yuuki Kaburagi had massacred all of his friends, Aoko is ordered by the High-Marshall of the Royal Guard to capture the Mototsu.

Appearance
Usually, Aoko is fully clad in armour, which is mostly coloured in shades of silver, black, grey and blue. Notable additions include a silver breastplate resembling an upside-down crescent moon and a dark-visored helmet. Aoko's helmet bears two prongs on either side, with the silver ones wrapping around the sides and angling diagonally downwards. Aoko's back also has short wing-like thrusters mounted upon it, which are used for flying.