Rule 34 Dev - 1boy 2girls azumanga_daiou black_hair brown_hair child creator_connection crossover father_and_daughter green_hair kishi_nisen koiwai_yotsuba mihama_chiyo mihama_chiyo's_father mr._koiwai multiple_girls oto-san_switch parody pythagoras_switch quad_tails school_uniform serafuku short_twintails twintails yotsubato!|1330096482