svveetberry, traditional media, 1girl, saya \(saya no uta\), short dress, white dress, light green wings, ethereal wings, glowing wings, (lily flowers bloom on wings:0.8), eyes half closed, parted lips, head back, arched back, side view, full body, kneeling, seiza, (bokeh:1.2), scenery, background of decaying flesh, masterpiece, best quality, very aesthetic
