What to read after Failure Frame: I Became the Strongest and Annihilated Everything With Low-Level Spells (Light Novel) Vol. 6?

In search of the Country at the End of the Word and its secrets of forbidden magic, Mimori Touka plunges back into the Land of the Golden-Eyed Monsters. But on the way he's confronted by perilous new foes: the descendants of previous heroes from another world! The E-class underdog must flex his "useless" skills in a battle against their Sword of Courage and leader, the indominable Lewin Seale.