Synopsis

In one world, I was the Hero, and you were the Demon Lord.
In the next, I am a Reincarnator, and you are a Returnee.
"Do you still remember what you told me before I died?"
"Of course, I said that I fell in love with you."
"Were you being serious...?"
"You don't believe me? Then, let me prove it to you in this life."
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Cover art by Saclia (pixiv)