After escaping from the Ninja Village.
Uzui Seshū ran into Kokushibo, who was searching everywhere for the Demon Slayer Corps and Matsushita Shousha.
The former Village Chief of the Sound Ninja Village had no desire to provoke that demon.
But his considerable skill caught the Six-Eyed Guy's attention.
Even after using every trick he knew to resist, he still received a brutal lesson from the other man.
In the end, under threats and inducements.
The former Village Chief became a demon, half by force and half by choice.
His strength had already surpassed that of the Lower Ranks.
After gaining a physique far beyond a human's and a Blood Demon Art, his strength naturally increased dramatically.
As a result, he soon came to Muzan's attention.
Although the Demon King was initially merely surprised that Kokushibo had actually recruited a capable new demon.
He had originally intended to let Seshū spend more time developing among the Lower Ranks.
But unexpectedly, vacancies soon appeared among the Upper Ranks one after another.
To replenish their numbers.
After a little consideration, the Demon King promoted this capable former ninja.
The main reason was that he could not bear to let him fight Gyokko in a rank replacement blood battle.
Not only were the Upper Ranks already down two members.
Gyokko was also one of only two demons among them who could still earn money.
There were only six Upper Ranks in total.
Yet fewer than half of them could make money for Muzan.
They were Gyokko, who sold artwork, Doma, who collected donations from his followers, and Daki, who earned money with her looks.
Then Doma was gone.
Didn't that leave only Gyokko and Daki?
If Gyokko died in a rank replacement blood battle before a replacement could be found.
Even Muzan would consider