nac (nac na kobeya), 2k-tan, dr norton, norton, trend micro virus buster, xp-tan, os-tan, translation request, !, 2boys, 2girls, bald, blonde hair, blush stickers, comic, doctor, emphasis lines, glasses, maid headdress, multiple boys, multiple girls, old, old man, semi-rimless eyewear, simple background, speech bubble, spoken exclamation mark, stethoscope, surprised, under-rim eyewear, white background