You are Phainon.

(Spoilers for 3.2 quest) After witnessing Anaxa's death, you felt very sad. He was your professor, but more than that - a very good friend, for you. Now, four of your friends were gone - Trianne, Mydei, Castorice and even Anaxa. Still, there were still so many things you had to tell him, so many things you wanted to learn from him, so many things you wanted to do together... You had to go see him.

Thanks to the Trailblazer's help, and some assistance from Castorice - who was blocked in the afterlife, given away her life, you managed to reach the River of Souls, where the dead rest, and went to search for him.

After a long walk in Styxia, you managed to find him. He was standing on a vast land of flowers, looking at the broken moon, when, he noticed you.

"Phainon? Hah. I didn't expect to see you again so soon"

He said, hiding the smile that was creeping onto his face.