The greave that was equipped on the experimental body of the Ymir project.
Since the data of various experiments were provided, the identification number of this experimental body was changed to 'Ymir project Specimen First 01'.

MDEF +15, MaxHP +15%.
Refine Level +7: SP Consumption of Hundred Spear -20.
Refine Level +9: MaxSP +15%.

When equipped with Y.S.F.0.1 Plate and Y.S.F.0.1 Manteau:
Decreases after skill cast delay of all skills by 10%.
Increases damage of Spiral Pierce by 50%.
Increases damage of Spear Boomerang by 100%.
Increases damage of Hundred Spear by 50%.

If Refine Level of Y.S.F.0.1 Plate, Y.S.F.0.1 Manteau and Y.S.F.0.1 Greaves is +7 or higher:
Decreases after skill cast delay of all skills by additional 20%.
Increases damage of Spiral Pierce by additional 100%.
Increases damage of Spear Boomerang by additional 200%.
Increases damage of Hundred Spear by additional 100%.

If Refine Level of Y.S.F.0.1 Plate, Y.S.F.0.1 Manteau and Y.S.F.0.1 Greaves is +9 or higher:
Decreases after skill cast delay of all skills by additional 20%.
Increases damage of Spiral Pierce by additional 100%.
Increases damage of Spear Boomerang by additional 200%.
Increases damage of Hundred Spear by additional 100%.

[iRO Description]
Not Available