akira hamaguchi, darling in the franxx, effects, liquid, 1girl, 1boy, zero two (darling in the franxx), hiro (darling in the franxx), anime coloring, black hair, pink hair, green eyes, white hairband, horns, parody, long hair, hairband, oni horns, smile, looking at another, swimsuit, water, ponytail, index finger raised, couple, bangs, hetero, one-piece swimsuit, red horns