User blog comment:Omega natsu2/Chapter 390: The Story of a Boy, Predictions./@comment-5873677-20140621142042/@comment-121.54.54.131-20140622005540

IIRC, future Rogue stated that Frosch will die one year after GMG. Seeing we are still in Tartaros Arc and it hasn't been a year yet, I won't believe anything that will trigger the shadow's possession of Rogue yet.