The World's Strongest Rearguard: Labyrinth Country's Novice Seeker Vol. 8
Arihito and his party have finally made it to District Seven! In order to give their combat prowess a boost, they decide to open the Black Box they received in the battle with the Vine Puppeteer. But according to Ariadne, a dangerous, sentient weapon-an armament-is sealed within...
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