A composition having excellent curability and adhesive bonding ability is provided. A composition, comprising the following components (1) to (5): (1) a polymerizable vinyl monomer containing 10 to 70 parts by mass of (1-1), 10 to 60 parts by mass of (1-2), and 10 to 60 parts by mass of (1-3) based on 100 parts by mass of (1) the polymerizable vinyl monomer, in which (1-1) is a (meth)acrylic monomer represented by the formula (A) Formula (A) Z—O—R1 (wherein, Z represents a (meth)acryloyl group, and R1 represents an alkyl group.), (1-2) is a (meth)acrylic monomer represented by the formula (B) (wherein, Z and Z′ represent a (meth)acryloyl group, and R2 and R2′ represent an alkylene group; R2 and R2′ may be the same as or different from one another; R3 and R3′ represent a hydrogen atom, or an alkyl group having 1 to 4 carbon atoms; R3 and R3′ may be the same as or different from one another; m and n represent an average number of moles of alkylene oxide added (proportion of alkylene oxide added)), (1-3) is a (meth)acrylic monomer that is a (meth)acrylic acid ester of a polyhydric alcohol; (2) a thermal radical polymerization initiator; (3) a photo-radical polymerization initiator; (4) an aromatic amine and/or pyridine derivative; and (5) an organic metal salt.