B: The Beginning: Succession

A new threat appears to disrupt Koku (Killer B), and Yuna's brief peace, but one which may be more familiar to them than they think. Meanwhile, Lilly and the Royal Police work to protect an important politician involved with the Regies who has information they need. However, Keith finds himself abducted, confined, and left for dead in an abandoned fortress. Effectively, taken out of the game he works to escape before he runs out of food and water.

Synopsis from Anime News Network