2girls, ahoge, black_skirt, brown_eyes, brown_hair, faceless, faceless_female, hair_ornament, hairclip, hand_on_another's_head, hug, indoors, lab_coat, long_hair, long_sleeves, multicolored_hair, multiple_girls, onii-chan_wa_oshimai!, open_mouth, oyama_mahiro, oyama_mihari, pink_hair, pizza_(pizzania_company), purple_hair, red_skirt, shirt, short_hair, siblings, sisters, sitting, skirt, socks, twintails, two-tone_hair, yellow_shirt