the blade body extends between and to a base end and a tip end, the blade body has a blade span extending between and to the base end and the tip end, the blade body extends between and to a leading edge and a trailing edge, the blade body has a blade chord extending between and to the leading edge and the trailing edge, the blade body forms a pressure side surface and a suction side surface, each of the pressure side surface and the suction side surface extend between and to the base end and the tip end and between and to the leading edge and the trailing edge, the blade body forms a recess at the pressure side surface, the recess includes a recess surface portion forming a portion of the pressure side surface, and the recess surface portion has a recess height, and

the recess height is greater than or equal to a Y-value of 0.025 for a normalized two-dimensional curve of a surface profile of the recess surface portion taken along a Y-Z plane orthogonal to the rotational axis for a recess span, a Z-direction of the Y-Z plane extends in a span direction of the blade span, a Y-direction of the Y-Z plane extends orthogonal to the Z-direction, the recess span extends between and to a minimum span position and a maximum span position in the Z-direction, and the recess height is a maximum height measured in the Y-direction between the two-dimensional curve and a straight line intersecting the two-dimensional curve at the minimum span position and the maximum span position.