Ren Akihara lives a quiet life with his family in the suburbs of Shizuoka, Japan. At school, he’s just another student. At home, he’s the younger brother who always smiles and listens.

No one notices anything strange.
No one ever asks too much.
And that’s exactly how Ren wants it.

Because behind his calm eyes lies something no one was meant to find—
a remnant from a place the world has erased.

There are no records.
No files.
No memories anyone can trace.

Just a name whispered in silence.
Core 06.

And a boy who learned how to survive by pretending to be normal.