An optically anisotropic article comprising one type or two or more types of a copolymer, or a mixture that includes one type or two or more types of the copolymer, and an additional polymer, the copolymer comprising a repeating unit represented by a formula and a repeating unit represented by a formula in its molecule, the content of the repeating unit in the copolymer being 5 to 90 mol% based on the total repeating units, the content of the repeating unit in the copolymer being 10 to 95 mol% based on the total repeating units, and a 0.5 g/dl methylene chloride solution of the copolymer having a reduced viscosity (ηsp/c) at 20°C of 0.3 to 2.0 dl/g, wherein Y 1 is a chemical single bond, -C(=O)-, or -O-C(=O)-, A 1 is a substituted or unsubstituted trivalent aromatic group, A x is a heteroaromatic ring group having 2 to 30 carbon atoms, A y is a hydrogen atom, a substituted or unsubstituted alkyl group having 1 to 6 carbon atoms, or an organic group having 2 to 30 carbon atoms that includes at least one aromatic ring selected from a group consisting of an aromatic hydrocarbon ring and a heteroaromatic ring, provided that the aromatic ring included in A x and the aromatic ring optionally included in A y are either substituted or unsubstituted, and A x and A y are optionally bonded to each other to form a ring, and Q 1 is a hydrogen atom, or a substituted or unsubstituted alkyl group having 1 to 6 carbon atoms, ⁅o-A 2 -Y 2 ⁆ wherein Y 2 is a chemical single bond, -C(=O)-, or -O-C(=O)-, and A 2 is a substituted or unsubstituted naphthalenediyl group, or a group represented by a formula, wherein R 1 to R 8 are independently a hydrogen atom, a halogen atom, or a hydrocarbon group having 1 to 6 carbon atoms, and T is a group among groups respectively represented by formulas (T-1) to (T-3), wherein R 9 and R 10 are independently a hydrogen atom, an alkyl group having 1 to 6 carbon atoms, a haloalkyl group having 1 to 6 carbon atoms, or a substituted or unsubstituted aryl group having 6 to 20 carbon atoms. wherein Y 1 is a chemical single bond, -C(=O)-, or -O-C(=O)-, A 1 is a substituted or unsubstituted trivalent aromatic group, A x is a heteroaromatic ring group having 2 to 30 carbon atoms, A y is a hydrogen atom, a substituted or unsubstituted alkyl group having 1 to 6 carbon atoms, or an organic group having 2 to 30 carbon atoms that includes at least one aromatic ring selected from a group consisting of an aromatic hydrocarbon ring and a heteroaromatic ring, provided that the aromatic ring included in A x and the aromatic ring optionally included in A y are either substituted or unsubstituted, and A x and A y are optionally bonded to each other to form a ring, and Q 1 is a hydrogen atom, or a substituted or unsubstituted alkyl group having 1 to 6 carbon atoms, ⁅o-A 2 -Y 2 ⁆ wherein Y 2 is a chemical single bond, -C(=O)-, or -O-C(=O)-, and A 2 is a substituted or unsubstituted naphthalenediyl group, or a group represented by a formula, wherein R 1 to R 8 are independently a hydrogen atom, a halogen atom, or a hydrocarbon group having 1 to 6 carbon atoms, and T is a group among groups respectively represented by formulas (T-1) to (T-3), wherein R 9 and R 10 are independently a hydrogen atom, an alkyl group having 1 to 6 carbon atoms, a haloalkyl group having 1 to 6 carbon atoms, or a substituted or unsubstituted aryl group having 6 to 20 carbon atoms. wherein Y 2 is a chemical single bond, -C(=O)-, or -O-C(=O)-, and A 2 is a substituted or unsubstituted naphthalenediyl group, or a group represented by a formula, wherein R 1 to R 8 are independently a hydrogen atom, a halogen atom, or a hydrocarbon group having 1 to 6 carbon atoms, and T is a group among groups respectively represented by formulas (T-1) to (T-3), wherein R 9 and R 10 are independently a hydrogen atom, an alkyl group having 1 to 6 carbon atoms, a haloalkyl group having 1 to 6 carbon atoms, or a substituted or unsubstituted aryl group having 6 to 20 carbon atoms.