六斉堂

Affiliation: The Association
Bug: Chironomid
Ability: Group Growth - Mass Game. While looking like human, Rokusaidou's entire body is made of minuscule flies acting in unison and constantly reproducing, serving various uses and allowing her an extremely wide variety of fighting strategies and very high survivability that rivals Sanbara's. 

Nihilistic leading member of the Association and a bug researcher, Rokusaidou goes to great lengths in assuring victory for her group and doesn't shy away from playing dirty or using ruthless strategies to achieve her goals.