Loveless

Loveless is a shounen-ai ("boy-love") fantasy anime and manga by Yun Kouga, since 2002. The story is about 12-year-old, Ritsuka Aoyagi, who is determined to find the person responsible for the murder of his brother. Unfortunately, he had a case of amnesia and lost all his memories two years ago. Along the way he meets a man named, Soubi Agatsuma, who claims to be a good friend of Ritsuka's brother. Together they fight in battles and challenge the suspicious organization called, The Seven Moons, in hope to find the truth behind the death of his brother.