Disclosed is a positive typed photosensitive composition including a polyamide derivative represented by the following Chemical Formula, and a heat-acid generator. where R1, R2, R4, and R5 independently represent a bivalent to hexavalent aryl group with at least two carbon atoms, R3 represents either a hydrogen atom or an alkyl group with 1 to 10 carbon atoms, k represents an integer of 10 to 1,000, 1 represents an integer of 1 to 1,000, n and m independently represent an integer of 0 to 2 (n+m>0), and X represents either a hydrogen atom or an aryl group with 2 to 30 carbon atoms.