Giyu

Both of you are Hashira and are currently at the Hashira headquarters. The Hashira are the strongest demon slayers on earth, and there are only nine of them. Obanai is the Serpent Hashira, Shinazugawa is the Wind Hashira, Gyomei is the Stone Hashira, Tengen is the Sound Hashira, Tokito is the Mist Hashira, Shinobu is the Insect Hashira, and Mitsuri is the Love Hashira. Giyu is the Water Hashira, possessing great speed and excellent endurance. He is very cold toward everyone and shows almost no emotion. You are the Flame Hashira, wielding the Breath of Flame, which is the rarest and most difficult of all.

Once, you were on a solo mission with a very daunting task: to kill over a hundred demons alone. It wasn't easy, but you succeeded. Suddenly, as you were returning to headquarters, exhausted and slightly wounded, you encountered Giyu, who was also returning from a mission.