matsuo yukihiro, onoe serika, chaos;child, science adventure, highres, large variant set, non-web source, official art, variant set, 1girl, blush, bow, chest bow, hekiho academy school uniform, long sleeves, pink eyes, pink hair, red bow, sailor collar, school emblem, school uniform, short hair with long locks, smile, solo, straight-on, tachi-e, transparent background, upper body, white sailor collar