Sui and his older brother , Kagaho in the flashback
In Saint Seiya: The Lost Canvas, Sui (翠 Sui) was Bennu Kagaho's younger brother, who considered himself a burden for his sibling. Sui committed suicide many years ago to relieve his brother of the burden. His death had an enormous impact on Kagaho's behavior and way of thinking. As noted by Libra Dohko, Sui bore a striking resemblance to Alone.