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