Dead or Die

Toru works in the underworld to cover the medical expenses of his mother One day his boss gives him a job That is to get rid of his senior who has made a mistake The bosss command is absolute If he doesnt get rid of his senior he will be killed But it isnt easy for him to get rid of his senior who had took him under the his wing since Toru was a newcomer He is faced with no choice So what does Toru decide to do