koi (koisan), original, bad id, bad pixiv id, highres, 1girl, ahoge, black thighhighs, blue eyes, blue skirt, blush, cowboy shot, female focus, flower, from behind, green hair, headphones, holding, holding umbrella, hydrangea, looking at viewer, looking back, musical note, plaid clothes, plaid skirt, pleated skirt, purple eyes, quaver, short sleeves, skirt, solo, teruterubouzu, thighhighs, umbrella, vest, water drop, zettai ryouiki