It's Alice Kurobane (黒羽アリス) (黑羽爱丽丝), the anime charactor of <Shadowverse> and <Shadowverse Flame>

There're 3 different appearances with different taggers

For idol Alice Kurobane: alis, alis_idol, 1girl, solo, blue hair, smile, holding, open mouth, short sleeves, bow, hat, white sailor collar, twintails, choker, looking at viewer, wrist cuffs, sailor collar, shiny, bangs, puffy short sleeves, upper body, sidelocks, shiny hair, red eyes, puffy sleeves, black choker, collarbone, purple headwear, dress, beret, purple shirt, :d, hat bow, shirt, sailor dress, parted bangs, pink bow, frills, necktie, short hair, purple dress, school uniform

For Alice Kurobane in disguise: alis, alis_normal, 1girl, solo, closed eyes, blue hair, brown headwear, hat, open mouth, smile, twintails, v, striped, shirt, striped shirt, sunglasses, choker, upper body, round eyewear, long sleeves, :d, open clothes, facing viewer, virtual youtuber, jacket, sidelocks, cabbie hat, long hair, bangs, black choker, coat, labcoat, tinted eyewear

For JK Alice Kurobane: alis, alis_big, 1girl, solo, hat, smile, blue hair, long hair, jacket, sunglasses, closed eyes, two side up, pink jacket, black headwear, choker, long sleeves, closed mouth, shirt, beret, leaning forward, black shirt, open jacket, upper body, open clothes, jewelry