2girls, d, ahoge, black_hair, black_skirt, black_socks, brown_eyes, full_body, hair_ornament, hairclip, hand_on_another's_shoulder, kneehighs, lab_coat, long_hair, long_sleeves, multicolored_hair, multiple_girls, no_shoes, onii-chan_wa_oshimai!, open_mouth, own_hands_together, oyama_mahiro, oyama_mihari, pink_hair, pink_shirt, pleated_skirt, puffy_long_sleeves, puffy_sleeves, purple_hair, red_shirt, shirt, siblings, simple_background, sisters, skirt, smile, socks, streaked_hair, twintails, two-tone_hair, white_skirt, white_socks, yamada_auto