A gender-swapped girl reincarnated as a female elf in a world of swords and magic. She searched for her best friend but couldn't find him, forgetting him for 400 years.

The person who hit on her in town turned out to be her best friend, reincarnated 400 years later. She decided she'd stick with him until he died, just to pass the time.

And her best friend possessed heroic potential, striving to become the Hero and defeat the Demon Lord.

This is a TS romance story.

※ Also posted on Hameln and Kakuyomu.