Kuraki is the 16 year old sister of Doma. After she discovers what happens to the cult followers, she runs away from home. She meets Muzan, and her lover Rengoku. After he dies, Kuraki starts to lose control of herself. Will she be able to have a happy ending? Or will she lose herself forever?

Demons win the Infinity Castle War, but Muzan remains severely weakened. Senjuro and his friends set out to finally defeat Muzan, and avenge their fallen compatriots. He becomes a Demon Slayer and fights to cleanse the evil, for all those who fought, but couldn't.

An ordinary girl, who was obsessed with watching anime, got reincarnated into her favorite anime as a weak side character, that wasn't even seen in the anime. She was overjoyed because she could change the plot of her favorite anime, but at the same time disappointed because she had reincarnated into the body of a weak girl. But, being fragile didn't stop her, she tried to strengthen herself and kept training, she didn't care if there were any consequences, she just wanted to save the fictional characters she had always wanted to save. This is the first fanfiction of Kimetsu no Yaiba/Demon Slayer I made! ⚠️ WARNING ⚠️ SPOILERS FROM MANGA! CRINGEY STORY (Depends on what reader thinks) WRONG GRAMMARS (A few) Hope you enjoy the story!!