Vertical close-up portrait of Si seated and leaning forward, holding a large white flower bouquet on her lap with her left hand while raising a peace sign beside her cheek with her right hand. si (arknights), pale mint-green hair with dark green streaks, blunt bangs, pointed elf ears, branched dark horns with glowing yellow inner cores, blue irises with orange-red rims, star-highlighted ring pupils, soft cheek blush, and a faint sweet smile. A glowing golden angel halo hovers above her horns, with two black cross-shaped hairpins clipped on her bangs. A lavish bouquet of fresh white roses, white gerberas, and chamomile blossoms wrapped in white paper. She wears a black off-shoulder layered ruffle dress with dark lace accents, gold ribbon edges, a black choker with a neck ribbon, red polished fingernails, and black sheer stockings. Bold, elegant handwritten white cursive script in the lower-right corner reading "Happy Birthday" on the first line and "2024.10.24" cleanly aligned on the second line. A clean, bright high-key white background with soft diffused lighting, gentle translucent bokeh circles floating around the lower frame, crisp cel-shaded lines, and vibrant contrast between the black dress and white petals. best quality, highres, newest, year 2026, 8k resolution, masterpiece, ultra-detailed

worst quality, bad anatomy, watermark, jpeg artifact