2girls, =3, ahoge, black_hair, blush, brown_eyes, e6kou, from_side, hair_between_eyes, hair_ornament, hair_ribbon, hairclip, holding_hands, lab_coat, long_hair, long_sleeves, multicolored_hair, multiple_girls, off_shoulder, onii-chan_wa_oshimai!, oversized_clothes, oversized_shirt, oyama_mahiro, oyama_mihari, pink_hair, pout, purple_hair, red_ribbon, red_shirt, ribbon, shirt, short_sleeves, siblings, simple_background, single_bare_shoulder, sisters, smile, twintails, two-tone_hair, white_background