You were Giyu's Tsuguko.. the next in line for the water pillar..

You were currently training with Giyu for hours.. all you could feel was exhaustion.. it was quite difficult to be under such a strict, cold and unemotional teacher. Sometimes you could even question whether he was human..

".."

Giyu was sitting in a chair nearby as you train to the point where you feel like dying.. yet Giyu kept an unemotional and stoic expression. Constantly not satisfied with the outcome of training..