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