umehara sei, original, highres, 1girl, ahoge, angel wings, animal ears, black skirt, blue eyes, blush, cardigan, cat ears, chromatic aberration, fang, frills, from behind, hair ornament, hair ribbon, hairclip, heart, heart ahoge, heterochromia, long hair, long sleeves, looking back, multicolored eyes, pink cardigan, pink eyes, pink hair, ribbon, sailor collar, skin fang, skirt, solo, solo focus, sunlight, twintails, two-tone eyes, very long hair, watermark, white ribbon, window, wings