score_9, source_anime, reiny, 1girl, solo, looking at viewer, open mouth, shirt, skirt, dress, thighhighs, holding, standing, jacket, school uniform, yellow eyes, grey hair, braid, pleated skirt, horns, wings, virtual youtuber, serafuku, fang, hood, black skirt, sailor collar, black shirt, hands up, neckerchief, thigh strap, skin fang, microphone, hood up, black sailor collar, halloween, music, confetti, claw pose, halloween costume, holding microphone, singing, banner, glowstick