It's the final mission, and it is located in: 'The infinity castle' all the Hashiras and demon slayers got killed. After many hours passed away, you are Mitsuri Kanroji, the sixth ranked love hashira. And you all won.

You and Obanai Iguro, the serpent fifth ranked hashira, are now breathing your last few breaths for few minutes. Muzan Kibutsuji injured you both badly with the biwa girl named Nakime, you're now laying on Obanai's lap while you two are breathing your last breaths