A toner comprising: a toner particle that includes a binder resin; and an external additive, wherein a toner hardness A N/m and a toner hardness B N/m, which are measured as indicated in the description, determined by a nanoindentation method satisfy following formulas and: B ≥ 600 B / A ≥ 1.30 in the formulas and, the toner hardness A is an average value of a slope in a displacement region of from 0.00 μm to 0.20 μm in a load-displacement curve obtained by measuring the toner under a condition of a load application speed of 0.83 μN/sec where a load a mN is plotted against an ordinate, and a displacement amount b μm is plotted against an abscissa; and the toner hardness B is an average value of a slope in a displacement region of from 0.00 μm to 0.20 μm in a load-displacement curve obtained by measuring the toner under a condition of a load application speed of 2.50 μN/sec where a load a mN is plotted against an ordinate, and a displacement amount b μm is plotted against an abscissa, and wherein the toner particle further includes a magnetic body; the binder resin includes a vinyl resin having a monomer unit derived from a crosslinking agent represented by a following formula: in the formula, m + n is an integer of 2 or more, R 1 and R 4 independently represent H or CH 3, and R 2 and R 3 independently represent a hydrocarbon group having a linear or branched chain and the hydrocarbon group has from 2 to 12 carbon atoms; and the crosslinking agent has molecular weight of 300 or more. a toner particle that includes a binder resin; and an external additive, wherein a toner hardness A N/m and a toner hardness B N/m, which are measured as indicated in the description, determined by a nanoindentation method satisfy following formulas and: B ≥ 600 B / A ≥ 1.30 in the formulas and, the toner hardness A is an average value of a slope in a displacement region of from 0.00 μm to 0.20 μm in a load-displacement curve obtained by measuring the toner under a condition of a load application speed of 0.83 μN/sec where a load a mN is plotted against an ordinate, and a displacement amount b μm is plotted against an abscissa; and the toner hardness B is an average value of a slope in a displacement region of from 0.00 μm to 0.20 μm in a load-displacement curve obtained by measuring the toner under a condition of a load application speed of 2.50 μN/sec where a load a mN is plotted against an ordinate, and a displacement amount b μm is plotted against an abscissa, and wherein the toner particle further includes a magnetic body; the binder resin includes a vinyl resin having a monomer unit derived from a crosslinking agent represented by a following formula: in the formula, m + n is an integer of 2 or more, R 1 and R 4 independently represent H or CH 3, and R 2 and R 3 independently represent a hydrocarbon group having a linear or branched chain and the hydrocarbon group has from 2 to 12 carbon atoms; and the crosslinking agent has molecular weight of 300 or more. the toner hardness A is an average value of a slope in a displacement region of from 0.00 μm to 0.20 μm in a load-displacement curve obtained by measuring the toner under a condition of a load application speed of 0.83 μN/sec where a load a mN is plotted against an ordinate, and a displacement amount b μm is plotted against an abscissa; and the toner hardness B is an average value of a slope in a displacement region of from 0.00 μm to 0.20 μm in a load-displacement curve obtained by measuring the toner under a condition of a load application speed of 2.50 μN/sec where a load a mN is plotted against an ordinate, and a displacement amount b μm is plotted against an abscissa, and wherein the toner particle further includes a magnetic body; the binder resin includes a vinyl resin having a monomer unit derived from a crosslinking agent represented by a following formula: in the formula, m + n is an integer of 2 or more, R 1 and R 4 independently represent H or CH 3, and R 2 and R 3 independently represent a hydrocarbon group having a linear or branched chain and the hydrocarbon group has from 2 to 12 carbon atoms; and the crosslinking agent has molecular weight of 300 or more.