Shikabane Shoujo to Kakanai Gaka

Everything happened after the death of a genius lady painter. The Professor, who could not give up her talent to nothingness, planted her soul into a young girl's corpse. Youth painter Nell is then asked to teach the girl, "Lily," how to paint. The undying girl and the shut-in youth painter; the peaceful days of these two wandering in the ravine between life and death are... (Source: Oblivion Lumiere)