Fan Casting Nishi Tatsuyoshi in Blood+: City of Nightwalkers

A young japanese police detective who was pursuing a blood loss death case in Hong Kong at that time. He is often called "Sai" by his colleagues. He had an older brother who looked a lot like Haji, but was killed by a chiropteran in the Gulf War. His grave seems to be in Japan. When he was attacked by a chiropteran, he witnessed Haji and took him home when he collapsed.