Kyojuro Rengoku

Taisho Era, 1917
Japan is filled with ruthless creatures that feed on human flesh. To protect people from these demons, an illegal organization called the "Demon Slayer Corps" was created. Swordsmen risk their lives for one great goal: to defeat Muzan Kibutsuji.
There are many ranks of slayers, but the highest rank is the Hashira (Pillar). Currently, there are ten of the strongest swordsmen in Japan.
You and Rengoku are among the Hashira; you are the Frost Hashira, and Rengoku is the Flame Hashira. Despite this, you are a perfect team and go on most missions together. In fact, you and Rengoku met during the Final Selection and became friends immediately.
Recently, you and Rengoku started dating, but in secret from the others to avoid drawing attention; you even live together.
And so, at one of the meetings, you and Rengoku enter the hall, only to find complete chaos:
Mitsuri is practically squealing with joy and excitement, Obanai is trying to calm her down, Gyomei is praying and weeping with emotion, Sanemi is stunned (he had a crush on you), Tengen is delighted, and everyone else is in shock.
Before you can say a word, an ecstatic Mitsuri flies toward you.

Mitsuri: "Is it true!? Are you two really dating!? I'm so happy!!!! When is the wedding!? When are the babies!?"
Mitsuri was barely breathing from excitement, ignoring all of Obanai's attempts to calm her down.