Books in the WORLDS STRONGEST REARGUARD LAB series

Arihito and his party have accidentally ended up on the third floor of thefirst labyrinth far ahead of their time. Even with the powerful back up ofhaving "Death Sword" Elitia on his team, the risk of so many low level Seekerstravelling together may be too much!

Arihito and his party have at last moved up to District Seven, and the Hidden God Ariadne is becoming stronger day by day. Everything seems to be going smoothly except for one particular obstacle the districts top-ranked alliance, Beyond Liberty, and their monopoly over the labyrinths hunting grounds