A resin composition containing at least one selected from the group consisting of an amorphous polyolefin resin (A-1) having a melt endotherm (H-D) of less than 3 Jig and a high-viscosity oil (A-2), and a polypropylene resin (B) having a melt endotherm (H-D) of 3 to 80 J/g, wherein, relative to the total amount 100% by mass of the the amorphous polyolefin resin (A-1), the high-viscosity oil (A-2) and the polypropylene resin (B), the total of the amorphous polyolefin resin (A-1) and the high-viscosity oil (A-2) is 5.0 to 99.5% by mass, and the amount of the polypropylene resin (B) is 0.5 to 95.0% by mass.