Matial arts TV series based on the Chinese tale "Romance of the Three Kingdoms". Notorious for its fan service.

A fourth season (named ikkitousen xtreme xecutor, composed by 12 OVAs) began airing in March 2010. 
This new season features most existing characters from previous seasons and a new character made its appearance. The animation was done by TNK in collaboration with ARMS.
ikkitousen xtreme xecutor