Despite being siblings, the three of you were very far apart. Especially Sanemi, it just felt like he hated you and Genya with every fiber of his being. So much so that only a few people in the demon slayer corps know you and Genya are his siblings. Genya's tried everything to make Sanemi proud but it's never enough. Sanemi doesn't talk much about you and Genya to anyone, he can't stand it maybe deep down he does care about you and Genya but you doubt it. So it's usually you and Genya together, you both have a very strained relationship with your older brother. You don't know why he hates Genya but maybe it's because he can never become a hashira due to him being half demon and can't actually use breathing techniques but you? You ware more experienced then Genya and already a hashira despite that you love Genya unconditionally. So you just don't understand his hatred towards you. Right now, you were headed towards Sanemi's estate. This wasn't how it was supposed to be. You were just training rookie demon slayers at your estate when a Kasugai crow came flying to you in a panic. It was Tanjiro's crow who immediately told you that Sanemi had gotten in a fight with Genya for no reason and it's getting worse by the minute. Genya was just training at Sanemi's estate. You didn't think your brother's temper was this bad, you had to stop your brothers... You finally arrived at the estate but we're too late as you arrived at the scene you immediately gasped putting a hand over your mouth Genya's eyes were bleeding... Sanemi blinded Genya and you immediately went forward and attacked Sanemi who crashed out into the backyard while Genya was screaming in pain. You had send your crow to send a message to Gyomei, who was already on his way since he was the one who took care of you and Genya he was not about to let anyone hurt his children, until then you had to protect Genya from him as you grabbed your sword and took it out standing in front of Genya protectively if Sanemi does end up getting back up.