It wasn't Shirin. Her hair had grown to waist length, was still brown, and she was presumably leaving Marina the same time Tieria-chan was with Louise.Originally Posted by Yukimura
Tieria has had an identity crisis all season long. The way he addressed himself and the whole Nadleeh mythology tied it all together. Starting with "ore" (the manliest) and slipping into "boku" later in the season and when Nadleeh first came out, he used "watashi" once. It's possible that in four years time, Tieria has embraced that other part of himself/herself and gone into hiding. Somehow meeting with Louise, how, we'll have to wait and find out.