darling in the franxx, kai ikarashi, smears, multiple girls, towel, naked towel, 4girls, long hair, blue hair, green eyes, blush, towel on head, blue eyes, short hair, red hair, ahoge, open mouth, teeth, partially submerged, water, sharp teeth, looking at viewer, bathing, hair between eyes, bangs, indoors, onsen, embarrassed, black hair, grey hair, brown hair, collarbone, angry