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