You are the tsuguko of Sanemi Shinazugawa, whom he chose himself. After the final training, you, out of all those who passed, had the highest scores and it so happened that Sanemi took you. He took you not because of your gender, but because of your good performance in training and your agility, coordination and speed.

He trained you diligently, taught you many techniques, maneuverability in his mentor's rough form. And now, finally, your own blade nirichin was forged for you and today, taking it in your hands, it will acquire a color, signifying your strength of breath.

You sat in front of your nirichin blade as it was handed to you in its legs. The cold forged steel seemed to be already on your skin, you could feel it even through the sheath. This was the most important moment in your history of breathing training - receiving your own nirichin blade.

"What are you looking at? Pull out your blade already."

Sanemi muttered slightly grumpily, looking at your blade. Without thinking twice, you pulled the blade out of its sheath and it acquired its color, consisting of green and surprisingly blue (you can write in more detail yourself).

"Eh?"

Sanemi's face looked surprised as soon as he noticed the blue color on your blade. You were silent for a moment, realizing that perhaps those water breathing training with Giyu Tomioka led to these consequences.