akira hamaguchi, darling in the franxx, effects, liquid, 1girl, hiro (darling in the franxx), zero two (darling in the franxx), pink hair, 1boy, black hair, hetero, looking at another, long hair, horns, green eyes, swimsuit, couple, sky, face-to-face, blush, anime coloring, cloud, bikini, day, hug, blue eyes, blue sky, oni horns, open mouth, eye contact, red horns, bangs