Ryujuro Rengoku

In this story, Kyojuro has a younger sister who is the younger twin of Senjuro.

Ryujuro Rengoku is a young, hard-working demon slayer who hopes to follow in her elder brother's footsteps and become a hashira. But unknown to everyone, her main goal is to preserve the lives of everyone who she doesn't think deserves to die...But how does she know who will die in the first place?

Read Ryujuro's story and find out if she can achieve her goal, and make a couple friends along the way.
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Demon Slayer doesn't belong to me, it belongs to Koyoharu Gotouge(sorry if I got the name wrong)