A toner comprising: a binder resin; and a release agent, wherein an amount of the release agent included in the toner is from 1% by mass through 8% by mass relative to an amount of the toner, as expressed as an equivalent mass of an endothermic amount of the release agent determined by differential scanning calorimetry as measured according to the description, wherein an amount of the release agent that is present in a region from a surface of the toner to a depth of 0.3 μm is from 0.1% by mass through 4% by mass, as determined by attenuated total reflection Fourier transform infrared spectroscopy (FTIR-ATR) as measured according to the desription, wherein, in an image of a torn surface of the toner, the image being taken by a transmission electron microscope as measured according to the description, a relationship below is satisfied: WDa < WDb < WDc where WDa denotes a number average particle diameter of the release agent present in a region Aa that is a region from a surface of the toner to a depth that is one-sixth of a diameter d of the toner (1/6d), WDc denotes a number average particle diameter of the release agent present in a central region Ac that is a circular region having a center located at a center of the toner and a radius of 1/6d, and WDb denotes a number average particle diameter of the release agent present in a region Ab that is a region other than the region Aa or the region Ac, and wherein the toner has a second most frequent (by number) peak within a range of from 1.21 times through 1.31 times as large as a most frequent (by number) number particle diameter (a most frequent diameter) in a distribution plot of number particle diameter of the toner versus frequency (by number) of the toner. a binder resin; and a release agent, wherein an amount of the release agent included in the toner is from 1% by mass through 8% by mass relative to an amount of the toner, as expressed as an equivalent mass of an endothermic amount of the release agent determined by differential scanning calorimetry as measured according to the description, wherein an amount of the release agent that is present in a region from a surface of the toner to a depth of 0.3 μm is from 0.1% by mass through 4% by mass, as determined by attenuated total reflection Fourier transform infrared spectroscopy (FTIR-ATR) as measured according to the desription, wherein, in an image of a torn surface of the toner, the image being taken by a transmission electron microscope as measured according to the description, a relationship below is satisfied: WDa < WDb < WDc where WDa denotes a number average particle diameter of the release agent present in a region Aa that is a region from a surface of the toner to a depth that is one-sixth of a diameter d of the toner (1/6d), WDc denotes a number average particle diameter of the release agent present in a central region Ac that is a circular region having a center located at a center of the toner and a radius of 1/6d, and WDb denotes a number average particle diameter of the release agent present in a region Ab that is a region other than the region Aa or the region Ac, and wherein the toner has a second most frequent (by number) peak within a range of from 1.21 times through 1.31 times as large as a most frequent (by number) number particle diameter (a most frequent diameter) in a distribution plot of number particle diameter of the toner versus frequency (by number) of the toner. wherein an amount of the release agent included in the toner is from 1% by mass through 8% by mass relative to an amount of the toner, as expressed as an equivalent mass of an endothermic amount of the release agent determined by differential scanning calorimetry as measured according to the description, wherein an amount of the release agent that is present in a region from a surface of the toner to a depth of 0.3 μm is from 0.1% by mass through 4% by mass, as determined by attenuated total reflection Fourier transform infrared spectroscopy (FTIR-ATR) as measured according to the desription, wherein, in an image of a torn surface of the toner, the image being taken by a transmission electron microscope as measured according to the description, a relationship below is satisfied: WDa < WDb < WDc where WDa denotes a number average particle diameter of the release agent present in a region Aa that is a region from a surface of the toner to a depth that is one-sixth of a diameter d of the toner (1/6d), WDc denotes a number average particle diameter of the release agent present in a central region Ac that is a circular region having a center located at a center of the toner and a radius of 1/6d, and WDb denotes a number average particle diameter of the release agent present in a region Ab that is a region other than the region Aa or the region Ac, and WDa denotes a number average particle diameter of the release agent present in a region Aa that is a region from a surface of the toner to a depth that is one-sixth of a diameter d of the toner (1/6d), WDc denotes a number average particle diameter of the release agent present in a central region Ac that is a circular region having a center located at a center of the toner and a radius of 1/6d, and WDb denotes a number average particle diameter of the release agent present in a region Ab that is a region other than the region Aa or the region Ac, and wherein the toner has a second most frequent (by number) peak within a range of from 1.21 times through 1.31 times as large as a most frequent (by number) number particle diameter (a most frequent diameter) in a distribution plot of number particle diameter of the toner versus frequency (by number) of the toner.