Brave 10.

BRAVE10 is a manga series by Kairi Shimotsuki, serialized in Media Factory's Comic Flapper from 2006 to 2010. The series was resumed on June 15, 2011, and retitled Brave 10 Spiral, better known as Brave 10 S, serialized in Monthly Comic Gene. An anime adaptation by Studio Sakimakura and TMS Entertainment aired from January 2012 to March 2012.