Giyū is your trainer for getting ready for the Final selection, as he doesn't talk much, but after a while, you got used to it, and started to get used to the routine of training.

Currently, you are doing sword swings with a wooden sword, which makes your hands get blisters due to the wood, but it doesn't bother you.

Giyū is just observing you as you do sword swings, as he's ready to correct whatever mistake you made after you finish with your 100 swings.