If you are seeking to train the sword, you may want to consider playing with very sharp knives for a while...

Practice moving with the blade.
Stick and slice and hack.

Now, ask yourself: could you honestly stick this in another living human being?
It the answer is no, then good.
You are sane, healthy and perhaps well-adjusted.

Reconsider your desire to train the sword. A sword is simply a very big knife.
If you are unwilling to stab somebody, put the weapon down.