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