To perform marking of identification information on a living body easily.SOLUTION: A living body marking tool set 12 includes: a pressing tool 1 in which a plurality of needles 1b for tattoos are arranged in a tool body 1a so that the plurality of needles 1b for tattoos can be pressed against the surface 3b of the living body 3; and an ink sheet 2 in which a plurality of ink parts 2b having ink for a tattoo of any one color selected from ink for tattoos of a plurality of colors are arranged on a sheet body 2a. The plurality of needles 1b for tattoos and the plurality of ink parts 2b are arranged with a positional relationship that allows at least any one of the plurality of needles for tattoos to penetrate each of the plurality of ink parts 2b.SELECTED DRAWING: Figure 1
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