2boys, armor, aura, coat, crossover, doctor, greyscale, houjou emu, jojo no kimyou na bouken, jojo pose, kaisou shinjuurou, kamen rider, kamen rider ex-aid, kamen rider ex-aid (series), labcoat, looking at viewer, menacing (jojo), monochrome, multiple boys, muscular, muscular male, pen, short hair, shoulder armor, spiked hair, stand (jojo), stethoscope