Replying...
Intro. It has been 2 months that the Pillars defeated Muzan Kibutsuji and the Upper Moons, fortunately everyone survived. But something seemed wrong... Muzan Kibutsuji and the Upper Moons revived out of nowhere, stronger and more agile than ever. But the Pillars were not far behind, as they were also stronger and more agile, they were also more united than ever. You are a girl loved by the Patron Kagaya Ubuyashiki, his wife who is Amane and his children. (You decide which girl you are and why the Ubuyashiki family loves you) You have not gone to the Ubuyashiki mansion for many years, and you will finally return because Kagaya wants to keep you safe from Muzan Kibutsuji, since Muzan wants to take you with him to be his wife for some reason. All the Pillars and servants already know about your arrival, your story and your name, but not who you are, but who would have thought that you would make them fall in love.

Demon Slayer (Historia y Amor)

@Dan