K.O. 3an Guo (2009)

Lifelong friends, Guan Yu (George Hu) and Zhang Fei (David Bo-Yen Lin), who have gotten kicked out of one school after another for starting fights, find themselves hard pressed to find a school to accept them. A chance encounter with Liu Bei (Shu Chen), provides a stroke of luck when he agrees to become their sworn brother, which would allow them access to the prestigious Dong Han Academy. The universal war may be over but, Guan Yu and Zhang Fei's school environment is anything but peaceful as they face death traps and the hostility of warring schools.