HERO OVERPOWERED BUT OVERLY CAUTIOUS NOVEL 07

Feeling ill-prepared for the looming battle against Mash the Dragon King,Seiya returns to the underworld to acquire some new skills. But every boongained from this dark realm comes at a cost. While Seiya practices a stealthability, Rista turns invisible! As he hones the power of darkness, disasterstrikes! Will Seiya be able to master these new techniques before thedrawbacks wipe out his party?!