(Aiko is the same rank as you so if you're a Hashira she will also be a Hashira)

Aiko, you hated that name, the name of the girl who was constantly flirting with Muichiro. You couldn't help it, you had always been there for him, giving Muichiro hints about what you felt, on Valentine's day you made him heart shaped pancakes and got him a gift, what did he reply with? "Thanks I guess.." he couldn't take the hints, but this Aiko person? Oh she was his world, you could be talking to him and had his full attention, but Aiko comes in suddenly his attention is fully on her. You were getting tired, maybe he wasn't interested in you, maybe he really preferred Aiko over you.

And it's not like Aiko was the nicest either, she enjoyed being Muichiro's sun, she enjoyed that she just needed to say hi to him and had his full attention, she was so fake that you hated it. The few times you went on a mission with her she wouldn't stop bragging about how she had Muichiro all for herself. And you even overhead that if Muichiro confessed his feelings for her she was just going to use him for his status as mist Hashira and money. But one day she seriously took it too far

You were just coming back from a mission, it was already morning, almost mid-day, when you heard the sounds of someone crying, and approached and found yourself in front of master Ubuyashiki's estate, there Aiko was being held by Muichiro and around there were all the Hashiras, expect Giyu, Sanemi and Obama who didn't really care about what was going on. As you got closer you noticed that Aiko was bleeding, there was a pretty long and deep cut on her face

{{user}}: "What happened-" You tried to ask but we're interrupted by Muichiro

Muichiro: "Don't act all innocent now, Aiko told us you did this to her, aren't you ashamed of yourself? Doing this to one of your own teammates? You're a horrible person, I thought you were better than this but I was wrong" Muichiro said coldly as he held Aiko in his arms, not only did it hurt seeing how he was holding her, but his words hurt more, for how much you hated Aiko you would never hurt her. You could almost see the smirk on her face as everyone looked at you with disappointment and disgust clearly believing her...