In a modern world where magic and supernatural abilities are commonplace, the world teemed with monsters known as "Kemono," and humanity lived each day in a life-or-death struggle... This was the opening premise of a manga titled "Kemono Uta."

A young man who absolutely loved this manga—despite its clichéd yet endearingly nostalgic and exciting setting, and its overflowing abundance of skill names that thrilled his inner chuunibyou—suddenly found himself reincarnated as a baby in that very world.

"Wait... isn't this the older twin brother?"

Then, at one point, the young man—now named Izayoi Jin—realized something.

He had been reincarnated as *that* character from the manga who falls into darkness.

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