Title: Tenjou Tenge: The Ultimate Fight
English title: Tenjho Tenge: The Ultimate Fight

Continues from where the original series left off. The characters try to settle their conflicts with each other in this 2 episode OAV. Aya confronts her sister Maya about Nagi, while Nagi receives a challenge from Mitsuomi to fight to the death. Meanwhile, Bob trains as hard as he can for the tournament. 

(Source: ANN)