Shadow of the Moon

An acceptable end-game Longsword. Purple sharpness and 50% affinity allows this weapon to have a reasonably high damage-per-hit. Its 50% Affinity increases attack by 1.25 (when the affinity activates) and purple sharpness increases damage by 1.5. You will have slightly more chance to cause critical damage if the sharpness is kept high. It is a good weapon to use on enemies with little elemental weakness, such as Kirin.

Trivia
When the Spirit Gauge is full, a second hidden blade protrudes from the side of the main blade. It is unclear whether it is a hidden blade, or if one of the sword's lower spikes in fact "grows" into it, in the same manner Nargacuga's tail spike grow in Rage Mode.

Like the Phantom Mirage, this is doesn't have any bearing on damage output or sharpness.