re0n, kokona (blue archive), blue archive, highres, 1girl, animal ears, armpit focus, armpits, arms up, bare arms, bare shoulders, black hair, blue halo, blush, breasts, covered erect nipples, grey hair, halo, long hair, looking at viewer, medium breasts, multicolored hair, open mouth, orange eyes, parted lips, presenting armpit, simple background, solo, streaked hair, sweat, upper body, white background