it's over isn't it

AU

what if instead of Tekhartha Mondatta being assassinated was zenyatta. remmatra who saw this before forming null sector grieve over his death. left with a note to from him that was given to him before his death asked him to teach genji in compassion and carry on his lesson to the young cyborg. years later genji is looking for his master finds him at a balcony singing a song with a picture out of curiosity genji listen and finds what happens to his old master