tar-21 (girls' frontline), girls' frontline, absurdres, commentary, commission, highres, pixiv commission, 1girl, arm behind head, arm up, armpits, bare shoulders, bathroom, blue hair, blurry, blurry background, blush, breasts, collarbone, depth of field, dutch angle, groin, hair between eyes, hair intakes, hair lift, hand on own chest, hand up, hayasi iru, headgear, indoors, large breasts, long hair, looking at viewer, naked towel, open mouth, orange eyes, shower head, sideboob, sidelocks, solo, standing, thighs, towel, very long hair, wet