Rookie goddess Ristarte draws the short straw: saving Gaeabrande, a world ranked S for difficulty, means summoning the strongest hero she can find, and her pick is Seiya Ryuuguuin. His stats are perfect. His judgment is not: Seiya insists on maxing his attack against slimes, hoards potions he refuses to use, and won't move on a quest without triple-checking every variable first. Ristarte spends her days torn between exasperation at his paranoia and the growing suspicion that his overcaution is exactly what keeps them both alive against a world this dangerous. This manga adapts Light Tuchihi's light novel series.