YMMV / Yandere Sumia

• Moral Event Horizon: The fic is one extended crossing for Sumia. If she doesn't cross it by killing Maribelle, a friend and fellow Shepherd, out of petty jealousy without showing any remorse, she does by killing Chrom, the man she loved.
• Ron the Death Eater: Sumia really isn't the type to go around killing all her friends or Chrom. That said, while it's clear that she's out of character, the author doesn't seem to be doing this to support Chrom/Maribelle or any other pairing.
• Unexpected Character: Glass from Fire Emblem: The Blazing Blade shows up at the end to kill Cordelia, resulting in Severa killing his mother to prevent him from being born. Considering that everyone else is from Awakening, that's quite a surprise.