2boys, 2girls, d, ^_^, against_window, arm_fins, black_pants, black_vest, blue_background, blue_hair, blush, carrying, chair, closed_eyes, colored_eyelashes, colored_skin, dress, finger_to_another's_mouth, fins, green_dress, head_fins, heart, kneeling, looking_at_another, looking_to_the_side, merman, monster_boy, multiple_boys, multiple_girls, ohayousan_084, original, pants, piggyback, pink_dress, shirt, sitting, smile, speech_bubble, sweatdrop, table, tail, vest, webbed_hands, white_shirt, white_skin, window, yaoi