Traditionally, Akantor's weapons have high Raw damage, good Affinity, but suffer from terrible Sharpness, almost to the point of making the weapon useless. An easy way to correct this flaw is to wear Akantor's Armor set, as it gives Sharpness +1, which can alleviate the stress of having such poor sharpness, if only to a degree. Or with the Ceanataur Z armor, which also gives Sharpness +1, but also Sharp sword.