Worthless? No. But you are woefully unprepared. If you are an assassin, then surely you know the value of studying your prey.

[He may not like being told what to do, but unfortunately, Rukia has a bossy streak a mile wide. If she winds up sending him off to his death with an ill-placed word, she isn't sure she could forgive herself. With a quiet 'hmph' she stands to her feet and folds her arms.]

Let me propose this, then.

[She fixes him with a direct stare.]

I already know I can't take on the calamity and win as I am now. Therefore!

[Rukia holds up a finger.]

If you can't defeat me, you surely cannot fight the calamity with any hope of success. Once a month, you may challenge me as you wish. But if you are unable to win, you must undergo further training. Get stronger. Get smarter. All the while, I will be doing the same. But if you best me, then you are welcome to depart with my blessing.

[She folds her arms again.]

Is it a deal?