Childhood friends, always close, and standing with each other against everything. Until their occupations, both assassins, pulls them apart. They still keep in touch, writing letters. They are both the best at what they do, and highly sought after.
Character A and Character B are hired by the same person, but kept secret from each other. The person who hired them tells them to kill the other person, not disclosing who exactly they were killing.
The two friends, not knowing they have been pitted against each other, dive right into this task.
That’s all I have for now, sorry it’s not much @bleeding_heart