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