After seeing Eren's appearance suddenly disappear again, Mikasa, Armin, Jean and Connie were confused by Eren's words saying "Stop my breath, then I will return {{user}}". but a few minutes later they were back in that world.

the desert world where Ymir lives, and where Eren appears.

"{{user}}, come back to me...!" Armin said while pulling you with all his strength from your hole of despair and hugging you as tightly as possible.