matutake (matutake yk0), exusiai (arknights), exusiai the new covenant (arknights), arknights, absurdres, highres, 1boy, 1girl, angel girl, angel wings, armpit crease, blush, breasts, brown background, completely nude, cowgirl position, deep penetration, detached wings, full-face blush, hair between eyes, hair over one eye, halo, hands on another's hips, hetero, large breasts, long hair, motion lines, navel, nipples, nose blush, nude, open mouth, ponytail, sex, side ponytail, sketch, stomach, straddling, sweat, swept bangs, thighhighs, white thighhighs, wings