1boy, 1girl, age_difference, barefoot, black_pants, blush, brother_and_sister, brown_eyes, brown_hair, cheek-to-cheek, collared_shirt, cover, cover_page, curtains, doujin_cover, dress, heads_together, hetero, holding_hands, honjou_ruri, honjou_satoru, honnryou_hanaru, imminent_kiss, incest, indoors, long_hair, looking_at_another, one_eye_closed, original, pants, see-through_silhouette, shirt, siblings, sitting, tongue, tongue_out, white_dress, white_shirt, window