"She called him Aster. Do you know him?" Yelen was surprised by Eren's reaction. If he recognised that person with just the name, it could only mean that he was quite significant.
"What did he look like?" Eren asked further just to confirm his suspicions. If it was the same Aster that he was thinking about, then it did appear like a blessing in disguise.
At the time he killed Aster, he wasn't in the right frame of mind. He also didn't know how to use his Devouring abilities, which always made him regret the missed opportunity.
Although Aster's control over Space wasn't absolutely perfect, his abilities did allow him to manipulate it to some extent. If he could get his abilities, then he wouldn't have to rely on Yelen to create portals.
For a moment, excitement flashed in Eren's eyes. Unfortunately, the excitement lasted only for a short time as he remembered his body's condition.
