Using a curable resin composition including the following (A) to (E) configurations, which is excellent in adhesiveness to nails and curing reactivity, and a cured product of which has a certain flexibility, makes it possible to form a coating aiming for protection, decoration, and the like of nails with favorable followability to the nails: (A) 100 parts by mass of a compound having a urethane structure in molecule and containing acrylic functional groups at both terminals of a molecular chain, (B) 1 to 35 parts by mass of a trifunctional acrylic functional compound of a specific structure, (C) 15 to 75 parts by mass of a compound containing an acrylic functional group having an aliphatic ring structure, (D) 1 to 35 parts by mass of a compound containing an acrylic functional group having an aliphatic chain structure, and (E) 0.5 to 13.5 parts by mass of a photopolymerization initiator.