1girl, alternate costume, animal ear fluff, animal ears, black ribbon, black shirt, blush, bouquet, cat ears, closed eyes, facing back, facing viewer, from behind, grey hair, hair ribbon, holding, holding bouquet, long hair, official alternate hairstyle, open mouth, puffy short sleeves, puffy sleeves, ribbon, see-through, see-through sleeves, shirt, short sleeves, sidelocks, solo, twintails, upper body, virtual youtuber