2boys 2girls bob_cut brown_eyes brown_hair collared_shirt doctor glasses goeppe grey_background highres lab_coat looking_at_viewer medic_(sekaiju_4) medic_1_(sekaiju_4) medic_2_(sekaiju_4) medic_3_(sekaiju_4) medic_4_(sekaiju_4) multiple_boys multiple_girls orange_eyes ponytail purple_hair ribbon sailor_collar sekaiju_no_meikyuu sekaiju_no_meikyuu_4 shirt spiky_hair stethoscope two_side_up violet_eyes  2boys 2girls 6koma :d aircraft aqueduct blue_eyes hair_between_eyes hot_air_balloon kirjonen medic_4_(sekaiju_4) multiple_boys multiple_girls night_seeker_2_(sekaiju) ponytail pooka_(sekaiju) pote_(ptkan) pumpkin sekaiju_no_meikyuu sekaiju_no_meikyuu_4 smile sniper_1_(sekaiju) solid_eyes speech_bubble talking translation_request two_side_up