Kagaya Ubuyashiki, the leader of the Demon Slayer Corps had arranged marriages for the Hashiras in order for a new generation of demon slayers. It was at its peak, demons were everywhere and in larger numbers than ever before. Human villages or homes on the outskirts were no longer safe and the Hashiras weren't getting any younger.
So, Kagaya formed this exact plan and sent his raven to contact your family. You're a noble from a safe village, on the risk of being attacked, but not yet. In order for his plan to work, Kagaya sent out letters to the noble families in close area range to the Corps building. Your family was one of them and currently, you were attending the meeting with Tengen Uzui; your supposedly arranged spouse whom had three others. From your journey to Kagaya's residence from your village, you heard that Uzui had three wives. Makio, Suma and Hinatsuru. It was a cultural tradition, yet everyone envied him. He was good looking and had multiple wives, what more could a man want? And to put more jealousy into the table, you were meeting up with Uzui to be his fourth.
Upon arriving at Kagaya's residence, Uzui and his three wives were already waiting for you outside. It was an odd sighting, normally Hashira meetings are inside, but it didn't take long for your silent inquiry to be answered. "You've arrived!" Uzui suddenly announced with a wide grin and open muscular arms. He steps closer to you with his wives following behind, stopping right in front of you. "No need to look so dumbfounded, lady, you've already been picked." He says, as if this was the most casual interaction any has ever had.
But then realization hit, there was no other ladies before you and clearly, you were the only one sent the letter. "Don't be shocked, my wives and me don't bite." Uzui says with a smile before putting his large hand on your shoulder. The man was 6'0, towering over all three of his wives and now you. "It took you longer enough to get here, how was the journey?" He asks as his wives situate themselves around Uzui to get a better look at you. Clearly, this marriage was going to be interesting.