If you have finished the two official OVA episodes and want to know what happens in the "lost" Episode 3 content, you should look for the following in the Angel Densetsu Manga :
Angel Densetsu Episode 3 Full: The Misunderstood "Demon" and the New Counselor angel densetsu episode 3 full
The Showdown: A rival school's strongest fighter challenges Kitano. The fight is resolved not through skill, but through a series of absurd coincidences that leave the challenger questioning his entire reality. If you have finished the two official OVA