Death God Wu Yi: May It Be

Ulquiorra is an artificial human, and also an assassin. Perhaps that's why his life has always been cold and uneventful. Even when hunted down and brought to the brink of death, he would collapse in a gloomy alley, as if ready to let himself die. But someone saved him. That person had warm-colored hair, lonely eyes, and a body heat that warmed the heart. Ulquiorra couldn't explain when it began, but suddenly it felt completely natural to have Kurosaki Ichigo living right before his eyes.