Kawamatsu was one of the nine Oden who remained by Oden's side until his death. His true identity is Fish-Man "accidentally drifted" to Wano Country. Because the people of Wano Country are very prejudiced against demi-human races, he calls himself a kappa...
As an oriental Fish-Man, Kawamatsu shares similarities with the "Kappa" from the ancient legends of Wano Country.
Of course, Sig doesn't even want to talk about why he could accidentally drift to Wano Country, a place with such terrain, and... just how much more clever are the kappa than the Fish-Man, even though they are both rejected by humans...!
More importantly, Sig remembers that in the original work, after Oden's death, Kawamatsu took Oden's six-year-old daughter, "Kozuki Hiyori," and fled to the Ringo Region, where he cared for her for seven years.
However, whether they are Fish-Man or kappa, even if they are considered "experts," it is difficult for them to obtain uncontaminated food in Wano Country in the present day—their obviously different appearances make them too easy to be discovered.
Seven years later, Hiyori discovered that Kawamatsu hadn't had a proper meal in a long time because he was taking care of himself.
To avoid implicating Kawamatsu, Hiyori left home after leaving a letter when she was thirteen years old, which should have been more than a year ago.
Previously in the Ringo Region, Yamato happened to encounter Kawamatsu, a highwayman. Because of the horns on his head, Kawamatsu immediately concluded that Yamato was a lone member of the Beasts Pirates and naturally attacked him in anger...
Compared to other bandits who ruled the mountains, Kawamatsu was too conspicuous in appearance to dare to go down the mountain to rob the Beasts Pirates' stronghold or Kurozumi's henchmen, so his life was particularly miserable.
Ultimately, the two became friends after a fight. When Yamato learned that Kawamatsu was Nine Red Scabbards, she showed him great admiration without reservation. When Kawamatsu learned that Yamato was an admirer of Oden, he also extended goodwill to her.
At first, Kawamatsu also wondered, "Then why do you still wear the horns of the beasts?" But later he learned that the horns weren't just decorations, but were inherited because Yamato was Kaido's "son"...
Kawamatsu was taken aback by this, but in the end he accepted the reality that "Kaido's son wants to become Oden."
The food that Yamato had previously seized was also sent to Kawamatsu.
Now that Yamato heard Sig mention that they only had one night, he immediately became nervous. Although he was full of questions, he still asked them as he ran...
After all, the Ringo Region is in the northeast of Wano Country, and it would take a lot of time just to get back to the Flower Capital. Even if Yamato traveled at full speed, it would still take half a night!
"And then what?" Yamato had already transformed into the beast form of Kawamatsu Okuchi no Makami and was running in the moonlight.
It looks like a long-maned wolf with pure white fur, the tips of its mane being bluish-green, just like the tips of its hair in human form, and it still retains the two horns on its head...
Under the moonlight, the white fur appeared even more lustrous, and the streamlined body possessed a beautiful, canine quality.
As she ran, her shadow transformed into the silhouette of a cloaked man, who replied, "Actually, there was something important he didn't say... After all, you are Kaido's son."
Yamato seemed quite displeased with the title "Kaido's son," but understood that business was more important. "What is it?"
"Back then... it was the 'Kappa Swordsman' who jumped into the river to escape with Kozuki Oden's daughter, but Kawamatsu didn't mention Kozuki Hiyori." Sig acted as if he knew this from "intelligence."
"What? My daughter... cough cough, Oden's daughter is with Kawamatsu?" Yamato asked in surprise.
"I'm not sure... but in any case, if we're going to marry Kozuki Hiyori, it'd be better to bring Kawamatsu along. We're in Ringo anyway, so it's on our way." Sig said something quite impressive.
"What? You think you can marry my daughter... cough cough, you think you can marry Kozuki Hiyori? You're not worthy!" Yamato said, going too far.
Although she has accepted the reality that she is "not Oden" and "will not be Oden," she can't shake this habit in a short time—after all, she has been imagining it for eight years. In her mind, Kozuki Toki in the diary is her wife, Kozuki Hiyori is her daughter, and Kozuki Momonosuke is her son...
"Of course not, what use would it be for me to marry Kozuki Hiyori? It would be for you to marry Kozuki Hiyori! That way you would be the son-in-law of Kozuki Oden, the grandson-in-law of the previous shogun Kozuki Sukiyaki... You could even nominally be declared a son-in-law. As long as that old man doesn't beat you to death, you would be half a member of the Kozuki Clan!" Sig said with great reason.
"Huh? Ah--" Yamato was stunned for a moment, and even slipped, rolling down the mountain path several times before regaining his balance.
"Anyway, you're no longer her father, just like her father. Getting married isn't a big deal, is it? As long as you convey your Token of Appreciation, I think... she might still agree." Sig didn't dare to be too definitive, after all, he had never met Kozuki Hiyori.
Based on the information from the original work, Kozuki Hiyori should be in the Flower Capital right now.
Denjiro, one of the Nine Red Scabbards, was so grief-stricken by Oden's death that his appearance changed. He decided to conceal his identity and appeared as "Kyoshiro." After Yasu and other yakuza bosses were suppressed, he seized control of the Flower Capital's underground forces and outwardly submitted to Kurozumi Orochi. He also maintained friendly relations with many of the Beasts Pirates' executives...
Denjiro secretly did not forget his lord's hatred and lay low, waiting for the "day of prophecy." Meanwhile, Kozuki Hiyori was very lucky and encountered Kyoshiro then protected her.
As long as two of the Nine Red Scabbards Hiyori herself agree, Yamato's marriage is considered settled.
"Yes! Then... I will make Hime Hiyori feel my Token of Appreciation!" After considering the Yamato and cons, Yamato's eyes hardened.
As for gender and such, Yamato clearly hasn't realized that he isn't actually a "son".
"So we need to hurry. Tonight you not only have to get married, but you also have to take down Kurozumi Orochi!" Sig urged.
Yamato hearing this, Yamato ran even faster, increasing his speed by three points.
"Huh? Is that Yamato? What's wrong?" Kawamatsu heard the voice and came out of the cave where he was hiding.
I met Yamato, who looked rather disheveled. After all, he had been threatened and hadn't fought back, so he had taken quite a beating. Although he wasn't seriously injured, he had traveled a long way to get here, so he was naturally in a sorry state.
"It's too late! Mr. Kawamatsu, I'll just say it straight... I want to marry Hime Hiyori!" Yamato, after transforming into human form, immediately performed a dogeza (a deep bow).
After all...
Although Kawamatsu was only a retainer of the Kozuki family, he was fully deserving of the title of Hiyori's elder, at least that's what Yamato thought. If Oden were alive, he would probably think so too.
Kawamatsu:???
Kawamatsu was completely stunned, unsure of where to begin...