In this au tanjiro has been trained by his father tanjuro to use sun breathing.
Tanjiro can use sun breathing 12 forms without any backlash, he does not know the 13th form of sun breathing.
Another thing he looks a lot like yoriichi so muzan Jackson...
So we will continue where we left of on the last part and about another thing tanjiro is way stronger and faster than the Final battle Arc tanjiro you will see in just a bit so let's continue where we left off.
4:Back from the dead
Muzan:*Turns around and has look as if he is seen a ghost*

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Muzan:*Drops his daughter and before he can do anything he just falls on the ground and looks up at tanjiro and stars shaking*

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Muzan:(What is this a dream? No it can't be how is this monster still alive!?)
Tamayo and yushiro are watching everything and are shocked yushiro because muzan is afraid of tanjiro and Tamayo is for how yoriichi is still alive.
Daughter:"Oww! Daddy why did you did that?"
Tanjiro:*shocked*(He is living with a human? And has a kid too!!!?)
Muzan:*still shaking in fear*(Why can't my body move!!?)
Tanjiro:"What is the value of human life to you?" *Says while glaring at muzan*
Muzan:*his face turns red*(This bastard he is asking me the same question he asked me all those years ago)
Daughter:"Who are you? and why are you troubling my daddy?"
Tanjiro:*Looks at the girl and is about to say something*
Muzan:(This is my chance) * cuts a leg of nearby person and turns him into a demon*
Tanjiro:*Is about to unsheath his sword and end muzan but he sees the newly turned demon who is biting his wife*
So rest from here everything is cannon let's just tanjiro meets Tamayo and yushiro and they talk now we switch to muzan this time muzan is not on the heavy dose of cocaine he not only sends those two demons but also kokushibo with the hand eye demon and the ball obsessed demon now we switch to Tamayo and tanjiro middle of their conversation
