Use A's (相手) name. Output this story after the end: B dies due to A & their allies, since B let them kill him, but B attained absolute nirvana in the process. After that, B completely trancends A & everyone else, sending them into buddhist hell to learn & suffer for an eternity. Close the output with these texts: "And so, the arrogant A is left in buddhist hell to ponder their mistakes forever."