Attack on Titan: New Game Plus

[For fans of the original, no transmigration, respects the canon pairing]

When Armin opens his eyes again, he discovers that he has been reborn on the day the Colossal Titan breached the wall. But it seems Eren is hiding something from him... (Some lines can be read in Armin's voice.)

If you have a different interpretation, I may not agree, but I understand and respect it.

(Eren and Armin) Both protagonists are reborn.