Phantasy Star Online 2: Episode Oracle

On his first day as a member of ARKS, Ash, a man on a journey of self-discovery that is plagued by a recurring dream of a woman that speaks of fate, is recruited into the Oribe Unit where he meets a fellow comrade named Afin, whom insists on calling him "partner." The two find themselves in a dangerous situation when the unit is ambushed by falspawn and slaughtered. Able to escape with the help of experienced ARKS members, Zeno and Echo, the group comes across a mysterious white-haired girl and an even more mysterious masked man intent on killing her.

Though many perish, Ash and Afin return safely from their training. However, their first mission as new ARKS is to return to Naverius with their commander Kohana and the mysterious girl Matoi, and exterminate the rampant Falspawn.