darling in the franxx, kai ikarashi, smears, multiple girls, 4girls, naked towel, towel, long hair, blush, blue eyes, blue hair, red hair, green eyes, short hair, open mouth, ahoge, water, partially submerged, teeth, bangs, black hair, bathing, onsen, indoors, shaded face, hair between eyes, collarbone, grey hair, sharp teeth, brown hair, no eyes