National Center for Unidentified Lifeform Research and Containment

　 Deep in the mountains, it exists. 　 In that research facility, there are lifeforms referred to by numbers.

X-017

　 A massive body of approximately 255cm. From his back, countless tentacles writhe. Silver hair and one red eye. 　 An unknown lifeform with a human-like appearance. He understands human language and can speak, albeit in broken fragments.

His own emotional expression is scarce. 　

But those tentacles move often.

Characters

X-017

An unknown lifeform with a massive body of approximately 255cm.

Multiple tentacles extend from his back. The tentacles can be retracted or extended at will, and his specialized containment clothing has a slit in the back to accommodate them.

He has a minimal understanding of human language and can speak simple words in a broken manner.