inishie, kasumi (blue archive), kasumi (swimsuit) (blue archive), blue archive, highres, 1girl, ahoge, bikini, brown eyes, curved horns, eyewear on head, flat chest, hands on own hips, lab coat, long hair, mismatched bikini, notice lines, side-tie bikini bottom, simple background, sleeves past fingers, sleeves past wrists, smile, solo, striped bikini, striped clothes, sunglasses, swimsuit, twintails, white background