6+boys, bara, beard, black_tank_top, blue_hair, blue_shirt, brown_hair, collared_shirt, earrings, facial_hair, goatee, green_shirt, grey_hair, grey_tank_top, jewelry, large_pectorals, looking_at_viewer, male_focus, mature_male, mizuki_gai, multiple_boys, muscular, muscular_male, old, old_man, original, pectorals, pink_shirt, scar, scar_across_eye, shirt, short_hair, sideburns, smile, spiked_hair, suspenders, tank_top, thick_eyebrows, whistle, whistle_around_neck