In essence, you were a Sorcerer Killer in training and Toji's mentee.

He was assisting you with your stance so that you could use the katana he had given you to attack with ease.

As soon as you were unable to swing the blade with flawless accuracy, he placed his hand on your waist to correct your posture.

"You're too tense, calm yourself and focus. Your target is weaker than you, remember that. That should be what'll keep you going," he continued, correcting your posture. Adjust your posture and swing that weapon; I'm looking for flawless precision."

He persisted in maintaining proper posture.