darling in the franxx, kai ikarashi, smears, multiple girls, towel, 4girls, naked towel, blush, blue eyes, blue hair, green eyes, long hair, red hair, short hair, ahoge, open mouth, arm up, water, looking at viewer, partially submerged, breasts, bathing, hair between eyes, bangs, indoors, cleavage, onsen, grey hair, embarrassed, closed eyes, collarbone, covering, black hair, wet hair, wet, bath