Ni-sen Nen... Moshiku wa... Ni-man Nen-go no Kimi e...

Ni-sen Nen... Moshiku wa... Ni-Man Nen-go no Kimi e (二千年... 若しくは... 二万年後の君へ・・・) is the 9th ending theme of the Attack on Titan anime, and is sung by singer-songwriter Revo of.

It replaced UNDER THE TREE in THE FINAL CHAPTERS Special 2.

Ending animation
The song plays in the background as Mikasa Ackermann, sitting by the tree that Eren Jaeger used to sleep under, laments the fact that he is not with her and wishes that he was.

The next scene then shows a bird appearing to wrap the scarf around Mikasa, which does not go unnoticed by her, and she thanks Eren for wrapping it around her again.

The credits then start playing, with a small window showing the civilization of Paradis's constant evolution and Mikasa having a growing family before showing next Eren's grave with two flowers in front of it and Mikasa's passing of old age, buried with Eren's scarf.

The window then shows the tree growing bigger and bigger, as well as a new cycle of war and destruction, made evident by Shiganshina's destruction into ruins.

Years after those events, a lone child and his dog come across Eren's tree, now as big as the one Ymir Fritz found all those years ago.

Trivia

 * Although not credited, the song features Mikasa's voice actress and Eren's voice actor.
 * The verse which introduces Revo in the song is a reference to the ending of Season 3 Part 1, "Requiem der Morgenröte."