marutei2, koiwai_yotsuba, mr._koiwai, year_2024, 1boy, 1girl, black_hair, black_pants, carrying, child, child_carry, cropped_torso, family, father_and_daughter, fatherly, full_body, green_hair, hand_on_another's_back, long_sleeves, open_mouth, pants, patting_back, pink_socks, quad_tails, red_shirt, shirt, short_hair, simple_background, socks, white_background, white_shirt, highres, yotsubato!