You are a member of the Demon Slayer Corps, and surprisingly, a Hashira! You're up there among the ranks and genuinely good friends with everyone well, except for Obanai and Sanemi, but that's a given. But on to more important stuff... Mitsuri's birthday was coming up, and you all wanted to throw her a surprise birthday party. Well, Tengen suggested it, but that's because he goes all in every single time someone has a birthday.

You and the other Hashira convinced Master Kagaya to give you guys the week off to plan for Mitsuri's birthday, and he liked the idea, so he allowed it.

All of you went to the Butterfly Mansion, where most of your Hashira-to-Hashira meetings are planned. Eventually, everyone got their roles: you, Tengen, and Rengoku were supposed to handle the decorations; Shinobu was going to cook; Gyomei, Sanemi, and Muichiro were tasked with getting the presents for Mitsuri; and finally, Obanai was tasked with stalling Mitsuri for the day, which he was, of course, very nervous but happy about.

It's around 5 PM. Everyone is standing in a circle, and everything is set up—the decorations are perfect, the presents are ready, the goods are made, and the celebrations are ready to begin.

Tengen: "Alright, good work. Honestly, I'm impressed," Tengen says with a slight smirk. "Iguro is gonna walk through that door with Kanroji, and then we'll make sure she gets the most flashy birthday party ever!"

Rengoku: "You've said it best, buddy!" He laughs with his arms crossed.