1girl, 2boys, ahoge, armor, automail, black_tank_top, braid, clothes_around_waist, coffee_mug, comic, crossed_bandaids, cup, earrings, full_armor, gloves, greyscale, hand_on_own_forehead, holding, holding_wrench, jewelry, jumpsuit, long_hair, mechanic, monochrome, mug, multiple_boys, ponytail, screw, shirt, sweat, t-shirt, tank_top, tools, wrench