The protagonist, Nagisa Rokudo, once died and was reincarnated.... more>>
It wasn't a different world reincarnation or a modern fantasy reincarnation, but a place that closely resembled the world he originally lived in.
Although there was a slight disappointment, Nagisa had a childhood friend in this world.
She was cute, beautiful, smart—a perfect childhood friend.
However, she fell ill and couldn't move her body properly.
But by some stroke of luck, a miracle happened, and the childhood friend recovered and became lively again.
And—quietly and unnoticed—she had transformed into a yandere who harbored a demon within her.
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