Rule 34 Dev - 1boy 1girl 3koma artist_name black_eyes black_hair butter_sugoi coffee_mug comic cup english_text frown glasses hair_over_shoulder hand_on_own_chin highres holding holding_cup hood hoodie math math_lady_(meme) meme mother_and_son mug original ponytail portrait side_ponytail sidelocks smile speech_bubble sweatdrop thick_eyebrows|18149138865