STRONGEST HUMAN IN DxD - A REINCARNATION STORY

Simply, Rio reincarnated in Demon Slayer world. BUT HE ALREADY DEAD.

He didn't have any knowledge in that world, while knew the anime, he never watch it.

Our MC didn't try to get into the action but one day his whole family killed by Muzan Kibutsuji. After he buried them properly, He met with Yoriichi Tsugikuni, while he was really a ghost.

He properly trained him from the age of 5.

Rio Kamado starts his Demon Slaying Journey and at last... He completed all forms and fight with Muzan for hours. Thanks to drugs, He could keep up with Muzan and beats him.

After Rio killed Muzan and passed the technique of the man he saw as his second Father...after various person learned Breath of the Sun, and Rio finished what he couldn't, Yoriichi didn't had any reason to stay in the living realm and fades after they lastly hug each other.

While Rio, a Demon Slayer didn't had ANY person he has bonded like he bonded with his father'... But he was left already.

He...unfortunaly didn't possessed Yoriichi's Godly talent... While he gained 'See Through World' when he is 12 years old permanently and he might surpassed him after 5 years he defeated Muzan... His body and Yoriichi's was different.

He broke his body so hard... While he might stay alive if he didn't use any breathing technique. But he didn't want to breathe any air without Sun Breathing, so he also left the living world.

And now he has his memories of his first reincarnation and slowly recovering his 'Demon Slayer' life...

Rio was born in the world of DxD... Which was the world he knew very well.

The cover is not mine.