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