[darklegends8]

Originally Posted by Hmm....

In manga, it's clearly stated that there are 21 cadets remain to join recon corp. So it's anime studio fuck the number up as usual



Reiner stayed there to join recon corp in both manga and anime.
Back in Episode 3, He also said he want to return to his hometown so it's natural that he join recon corp.

Beltholt, however, did say he want to join MP back in training episode. I don't know how come he suddenly join recon corp instead.

I think that was Marco