In this glamorous society, there is an ancient profession that is silently active in the darkness. Some people engage in this profession for survival, some for justice, some for excitement, and some just for killing, each with its own unknown purpose.
These people have a frightening and long-standing common name called assassins. In modern times, they are called killers.
---
He woke up from the dark hotel and remembered nothing except himself. Blood was the only memory he could retain. How should he continue his life? Is it time to find myself? Or should I abandon myself?
He is a goldfish...