Short prologue OVA, bundled with manga volume vol.10. Elsie receives from Dokurou Skull, hell's branch chief of "counter measures", the task to go on earth and capture evil spirits that have escaped from hell.

Takaya was sent to Kyoto to investigate the re-awakening of Ikko sect and Araki Murashige, a member of the Ikko sect who deserted the clan.With the help of his vassal Haruie, Takaya is finally successful in tracing Araki who hunts down a 400-years-old mandala (Buddhist artifact for meditating) that was made of the hair of the deceased Araki clansmen. Unfortunately, by the time they meet, Haruie recognizes Araki as Shintarou, her lover in her past-life. Takaya orders her to eliminate Araki, who is a threat, but will she be able to do it. Furthermore Takaya finally meets Naoe...

In response to the worsening crime rate, Japan creates Tokyo Butei High, an elite academy where "Butei" or armed detectives hone their deadly skills in hopes of becoming mercenary-like agents of justice. One particular Butei is Kinji Tooyama, an anti-social and curt sophomore dropout who was once a student of the combat-centric Assault Division. Kinji now lives a life of leisure studying logistics in order to cover up his powerful but embarrassing special ability. However, his peaceful days soon come to an end when he becomes the target of the infamous "Butei Killer," and runs into an emotional hurricane and outspoken prodigy of the highest rank, Aria Holmes Kanzaki, who saves Kinji's life and demands that he become her partner after seeing what he is truly capable of.

Dr. Gero's Androids #13, #14, and #15 are awakened by the laboratory computers and immediately head to the mall where Goku is shopping. After Goku, Trunks, and Vegeta defeat #14 and #15, #13 absorbs their inner computers and becomes a super being greater than the original three separately were. Now it is up to Goku to stop him. 

(Source: ANN)