A recap episode of episodes 1 through 10 of Kekkai Sensen. Leonardo Watch reflects on his experiences at Libra.

A terrible war has ravaged the land, and now, fueled by the blood of numerous fallen warriors the Yoma, demons from hell, emerge once more. A skilled ninja seeks to end the bloodshed these demons inflict upon humanity, but to do this he must fight against his undead former best friend and fellow ninja who was killed in battle and has been resurrected to serve the Yoma.

After destroying the Zorbados Empire, the Jyusenki-tai/Cyber Beast Force has expanded and are training new recruits. But after failing to stop a monster that seems to be a remnant of the Zorbados Empire from destroying a city, the CBF is thrown in jail. Now the CBF have to escape from jail and find out what was behind the monster they fought.

The Layzner OVA serves as an alternative version of the TV series. The first episode, titled "Eiji 1996", recaps the first part of the series (episodes 01-24). The second episode ("Le Caine 1999") takes place after a time skip, and contains episodes 26 through 37 (episode 25 of the TV series, being a recap itself, is skipped here). The final episode, "Seal 2000", is an expanded version of the final episode of the TV series (38) and features new animation and a longer epilogue.