Board Thread:Manga/@comment-7278867-20170312084406/@comment-26830922-20180525030602

I don't think Grisha outlasted the 13-year time limit. When Keith Shadis recounted how he met Grisha, he said: "I encountered Grisha beyond the wall... 20 years ago now?" suggesting he didn't remember the exact number of years. In fact, in chapter 93 when Zeke is talking with Colonel Magath he states Grisha was sent to the island along with the Attack Titan 22 years before. This was after the 4 year timeskip, and the Fall of Wall Maria was 5 years before that. So, 22-4-5 =13. So, Grisha was on his 13th year before the Wall fell.

However, in spite of that I also think he may have found a way around the curse. From the titan shifters we have seen on their final years (Uri Reiss and Eren Krueger) they appeared to have suffered from premature aging as evidenced by their sunken cheeks and haggard appearances. However, Grisha appeared perfectly healthy and his family made no comments about his health deteriorating (which they would have if it became apparent to them). Also, despite being on his final year he seemed to be in no particular hurry to pass down his Titan despite still not having accomplished his mission of reclaiming the Founding Titan (he was only prompted to do so after the wall fell).

This all suggests he found a way around the curse, but we'll have to wait for confirmation.