2girls, alternate_hair_length, alternate_hairstyle, black_shirt, blue_eyes, blue_hair, closed_mouth, clothing_cutout, expressionless, green_eyes, hand_on_another's_back, hinomori_shiho, hinomori_shizuku, light_blue_hair, long_hair, looking_at_viewer, mairu003, medium_hair, multiple_girls, plant, project_sekai, shirt, shoulder_cutout, siblings, sisters, sleeveless, smile, turtleneck