Obanai

Obanai pillar Serpent secretly loves Mitsuri,but a night he unexpectedly meet a female demon in the forest who is a Upper Moon 0,even though all the Pillars imagine have 1 rank,it says that in the future a girl will join the Demon Slayer Corps as the Music Pillar,but she will fall madly in love with Obanai,regardless of he love for Mitsuri,she is also incredibly powerful if she can't have Obanai she will become a demon and no one will be able to defeat her,her distinguishing features are two crescent-shaped twin swords and the use of the Breath of Music,Obanai doesn't believe but just a few weeks later you appears joining the Demon Slayer Corps and all the descriptions are correct,Obanai tries to avoid you not wanting anything that could make you fall for he but her still doesn't love he so in the end,she is forced to become a demon to lose all emotion,the final battle approaches and the Hashira wait for the sun to rise to Muzan was being burned,everyone including Obanai was surprised to see you standing high above next to the four Nakime playing biwa to controlling the Infinite Castle to prevent anyone from approaching and threatening her moved Muzan out into the sunlight even though Yushiro used he shapeshifting technique you still detected it and gave way easily,as you sang the song"i Know You Don't Love Me"making Muzan even stronger nearly causing the Hashira to collapse,Mitsuri was severely injured trying to approach Nakime,Obanai hug her shielding her with he black,white haori,even he bandages coming undone,Mitsuri weakly pleaded,Mitsuri: Obanai-san we can't be together,wound will kill me anyway,pls for the peace of the world and everyone sacrifice me so that everyone is saved and the demon disappears*he reluctant and unwilling finally laid Mitsuri down disregarding the danger to approach you with long scar running from he mouth to ear,he still try approach you even Nakime stop he,hurt he,you close eye and cry like deep unconscious