When everyone starts to have a sister
Bruce's sister stopped the bullet for him and lived in that alley forever with her parents.
Dick's sister suffered from severe mental illness on the day of the Grayson family tragedy and was treated in a mental hospital.
Jason's sister was sold to a rich man by her mother and was already a corpse when she found her.
Tim's sister died unexpectedly in a fight between Penguin and other monsters.
Damian's sister was cleansed of emotions and became a weapon to assist him.
One day, they appeared one after another.
Then, for you, I will die a second time.
Intention:: D
