A continuation of the epic adventure of plucky Riko and Reg who are joined by their new friend Nanachi. Together they descend into the Abyss’ treacherous fifth layer, the Sea…

The mystery surrounding her mother’s supposed death deepens as Riko learns the truth of her disturbing origins in the deadly and mysterious Abyss. More determined than ever to travel to…

The war between Euro Britannia and the European Union continues. New orders are given to the W-0 Unit. To land in the middle of the enemy territory as a diversion….

The side story takes place in 2017 a.t.b., between the rise of the “Black Knights” organization and the return of the supposedly “dead” Zero. The setting is in Europe, where…