Rule 34 Dev - 1boy 1girl ^_^ bad_id bad_pixiv_id book bottle brown_hair child closed_eyes computer duralumin father_and_daughter green_hair happy icym koiwai_yotsuba monitor mr._koiwai open_mouth outstretched_arms quad_tails short_hair sitting sitting_on_person stuffed_animal stuffed_toy teddy_bear teeth yotsubato!|2080419003