A rotary machine comprising: a rotor configured to extend along an axis; a stator disposed at an outer circumference side of the rotor and configured to rotate about the axis relative to the rotor; and a hole pattern seal fixed to the stator, configured to divide a space between the rotor and the stator into a high pressure side and a low pressure side, wherein the hole pattern seal includes: a first hole line (L1, L21) on which a plurality of first hole portions facing an outer circumferential surface of the rotor are formed at intervals in a circumferential direction of the rotor, and a second hole line (L3, L22) on which a plurality of second hole portions (22C, 22B) facing an outer circumferential surface of the rotor are formed at intervals in the circumferential direction, and which is formed at the low pressure side of the first hole line (L1, L21), characterized in that the hole pattern seal further includes fin portions that are continuously formed in the circumferential direction and that extend toward the rotor from a first partition, the first partition defining the high pressure side of each first hole portion, wherein the rotor comprises: a convex portion that protrudes from the outer circumferential surface of the rotor toward the hole pattern seal, is continuously formed in the circumferential direction, and faces the first hole portions at the low pressure sides of the fin portions, and wherein the convex portion has: an outer circumferential surface disposed with a predetermined clearance in a radial direction of the rotor with respect to a second partition, and disposed so as to overlap with the fin portion when viewed in the axis direction, the second partition defining the low pressure side of each first hole portion, and formed between the first hole portions of the first line (L1, L21) and the second hole portions (22C, 22B) of the second line (L3, L22); and a wall surface facing the fin portions and disposed at the high pressure side in the axis direction relative to a high pressure side surface of the second partition. a rotor configured to extend along an axis; a stator disposed at an outer circumference side of the rotor and configured to rotate about the axis relative to the rotor; and a hole pattern seal fixed to the stator, configured to divide a space between the rotor and the stator into a high pressure side and a low pressure side, wherein the hole pattern seal includes: a first hole line (L1, L21) on which a plurality of first hole portions facing an outer circumferential surface of the rotor are formed at intervals in a circumferential direction of the rotor, and a second hole line (L3, L22) on which a plurality of second hole portions (22C, 22B) facing an outer circumferential surface of the rotor are formed at intervals in the circumferential direction, and which is formed at the low pressure side of the first hole line (L1, L21), a first hole line (L1, L21) on which a plurality of first hole portions facing an outer circumferential surface of the rotor are formed at intervals in a circumferential direction of the rotor, and a second hole line (L3, L22) on which a plurality of second hole portions (22C, 22B) facing an outer circumferential surface of the rotor are formed at intervals in the circumferential direction, and which is formed at the low pressure side of the first hole line (L1, L21), characterized in that the hole pattern seal further includes fin portions that are continuously formed in the circumferential direction and that extend toward the rotor from a first partition, the first partition defining the high pressure side of each first hole portion, wherein the rotor comprises: a convex portion that protrudes from the outer circumferential surface of the rotor toward the hole pattern seal, is continuously formed in the circumferential direction, and faces the first hole portions at the low pressure sides of the fin portions, and a convex portion that protrudes from the outer circumferential surface of the rotor toward the hole pattern seal, is continuously formed in the circumferential direction, and faces the first hole portions at the low pressure sides of the fin portions, and wherein the convex portion has: an outer circumferential surface disposed with a predetermined clearance in a radial direction of the rotor with respect to a second partition, and disposed so as to overlap with the fin portion when viewed in the axis direction, the second partition defining the low pressure side of each first hole portion, and formed between the first hole portions of the first line (L1, L21) and the second hole portions (22C, 22B) of the second line (L3, L22); and a wall surface facing the fin portions and disposed at the high pressure side in the axis direction relative to a high pressure side surface of the second partition. an outer circumferential surface disposed with a predetermined clearance in a radial direction of the rotor with respect to a second partition, and disposed so as to overlap with the fin portion when viewed in the axis direction, the second partition defining the low pressure side of each first hole portion, and formed between the first hole portions of the first line (L1, L21) and the second hole portions (22C, 22B) of the second line (L3, L22); and a wall surface facing the fin portions and disposed at the high pressure side in the axis direction relative to a high pressure side surface of the second partition.