|Anime Debut||Episode 15|
|Seiyu||Hitomi Nabatame |
She had became a first year Yoshu academy student, somewhere after the events of season 1 of Ikkitousen.
Koshaji, is a young, girl, with short white hair, and is seen wearing the Yoshuu private school uniform, gray vest, white collared shirt underneath, black and gray skirt, knee high socks, and a pair of brown loafers. She also has a red tattoo on the bottom of her left eye.
Not much is shown of Koshaji personality, but it is shown that she has an unaffectionate personality, showing so by only going after her target, Sousou, and not caring of what happened of her other team mates, who were knocked unconscious.
Koshaji is sent to kill Sousou while he was injured from a gang battle. During her pursuit of Sousou she fights and is able to defeat Kakouton by piercing his eye with a secret pin she spit from her mouth. This caused Sousou to unleash his Dragon and defeat her easily. Once defeated Koshaji is grabbed by the head by Sousou who then smashed her face into a wall, killing her instantly.