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…

Class 1-A visits Nabu Island where they finally get to do some real hero work. The place is so peaceful that it’s more like a vacation … until they’re attacked…

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…