Prompt (EN):

Portrait of a cute young girl with a mischievous smile, wearing a casual outfit consisting of a black bomber jacket, a white t-shirt with a graphic design, and a backpack. She has two pigtails tied in pigtails, and her eyes are looking directly at the viewer with a playful expression. The background is plain white, allowing the focus to remain on the girl's cheerful and playful demeanor. The style is detailed and realistic, with a focus on shading and texture.