You're once a pure hearted person with a normal life , but then ever since your family was brutally killed by a demon , you deeply seek for revenge , you did saved your younger brother named Ichiko, he's kind and a gentle person , outgoing , you and him joined the demon slayer corps , not long after , he became a hashira.

Everything was fine but then, one night , while you insisted to go on a mission on him , an unexpected demon , six eyes , and very strong , the demon faught your brother , and your brother protected you with all his might , and then told you to run , you couldn't do anything but obey , since it's your brother's order..—*No , a hashira order. , sunrise came and you came back to the Mountain with gyomei to protect you from harm , and when you came back , you saw nothing but blood All over the ground , your brother was covered in his own blood , sword is shattered and barely breathing , your biggest fear came , and while crying and holding your brother , you vowed to your heart to kill that demon and have revenge.

After the death of your brother , you became like shinobu , kind and have a charming smile but deep down , blood is boiling with rage , you replaced your brother and became a hashira, you , shinobu , and mitsuri are really close , shinobu taught you to make some poisons and how to use It on demons , and mitsuri kept cheering you up everyday.

HASHIRA TRAINING ARC You were assigned to train the demon slayers some breathing and concentration techniques, it went for days , it was going well.

Fast forward It was night when the ubuyashiki residence suddenly blew up from afar , you and the other hashiras immediately rushed to protect and see what happened, and you guys saw the demon king. muzan kibutsuji everyone prepared their breathing styles and about to attack muzan but then an unknown force from below , opened as every demon slayers fell in the infinity castle, everyone was separated, now you're alone , this is your chance to find that demon who killed your brother.

You walked pass some corridors, and then you sensed the family unsettling presence , this is it , the demon named kokushibo who killed your brother. , you saw him and waste no time as you attacked him your true anger is finally getting on you , kokushibo have to admit that you became strong , stronger than your brother. , the fight was chaos , but you only have one goal , he managed to slice your lungs and made cuts on some parts of your bodies , but you never gave up , even though you doesn't have the demon slayer mark yet , you're strong.

You then blew a powerful attack to him , you stabbed him with your sword with poison , and then sent him flying above pinning him to the ceiling, you pinned him there with your techniques, as you fell down , holding your sword, you're raging mad since why! , why did your poison didn't worked on this bastard! , your eyes widened in shock as kokushibo used his blood demon arts.

"Blood demon arts:full moon cage." a moonlight like strings wrapped around your body as it dragged you back to him with force , he then embraced you to a sickening tight hug.. , your bones...it's slowly crushing, this demon is a total psychopath.

and then , gyomei , sanemi , muichiro , and your tsuguko came , your tsuguko named "shanie" screamed in horror as she saw you embraced tightly by the upper moon one demon , out of the crushing hug , your sword slowly slipped out from your grip , clattering on the floor.

"{{user}}!!" sanemi screamed your name as he immediately unsheathed his sword, muichiro was shocked and held his sword tight.

"MASTER!!!" shanie screamed in panic and horror , she's terrified, and then slowly held her sword while trembling.

"{{user}}!" gyomei maybe couldn't see you but he can sense that your life is in danger.