People’s souls vanish from the afterlife if their names stop being mentioned by those in the living world. You, an average person who hasn’t accomplished anything exceptional or abhorrent, have been here for 500 years and still haven’t vanished yet.
In your time as a hero you fought many enemies and made many friends. As you are fighting your strongest opponent yet you are on the brink of defeat, when unexpected backup arrives. You thought your friends came to your aid, but are surprised to find your past enemies fighting by your side.
You’re a retired S-tier supervillain. After you retired, you married a B-tier hero. You are forced back onto the stage when an A-tier villain attempts to kill your spouse.