1girl, armpits, arms up, ass visible through thighs, bangs, blue hair, blush, breasts, breasts apart, completely nude, genshin impact, half-closed eyes, hanging breasts, heavy breathing, kujou sara, large breasts, leaning forward, looking at viewer, mask, mask on head, navel, nipples, nude, nunu (pixiv69145027), open mouth, red mask, saliva, saliva drip, short hair, simple background, solo, standing, steam, teeth, tengu mask, tongue, tongue out, upper teeth only, uvula, yellow eyes