1boy, 1girl, backpack, bag, black_dress, blue_shirt, book, brother_and_sister, brown_eyes, brown_hair, chair, clothed_male_nude_female, couple, desk, dress, fingernails, grey_pants, hands_on_another's_face, hetero, holding, holding_clothes, holding_dress, honjou_ruri, honjou_satoru, honnryou_hanaru, implied_incest, indoors, knee_up, long_hair, long_sleeves, looking_at_another, lying, no_shoes, nude, office_chair, on_back, on_bed, on_person, on_stomach, original, pants, randoseru, red_socks, shirt, siblings, size_difference, sleeveless, sleeveless_dress, socks, stuffed_animal, stuffed_cat, stuffed_toy, swivel_chair, twitter_username, undressing, unworn_dress, unworn_shirt, white_shirt