They can pass down their Kekkeigenkai through breeding; if they put in the effort, a hundred years later, they could establish a family and become a Kekkeigenkai Ninja Clan.
The Uchiha Clan was originally formed in this way.
Just as Oyashiro was about to say something, a commotion erupted outside, drawing his and Miyako's attention.
On the stage of the colosseum, the female ninja suddenly screamed. The chakra within her turned a brilliant purple-red, and a small chakra tail swirled frantically behind her, whipping up a terrifying storm.
Despite its power, the female ninja's chakra was clearly in a state of severe chaos, launching attacks indiscriminately.
"Is that..."
Miyako exclaimed in surprise.
"It seems like the master of that female ninja gave her some kind of forbidden drug."
Oyashiro said calmly, unfazed by the situation.
"No, doesn't that look like something?"
Miyako's expression became serious.
"Look like something?"
Oyashiro glanced at the purple-red chakra tail behind the female ninja and was also surprised.
"Are you saying... Tailed Beast?"
Though Oyashiro appeared to be a merchant, he was not merely that; he was a powerful ninja himself and had deep ties with the Uchiha Clan. Before the First Hokage, Senju Hashirama, established the One Country, One Village era, his family had an indissoluble connection with the Uchiha Clan.
He knew quite a lot about some things within the Ninja Realm.
Among them was the secret of the Tailed Beast.
"But I remember, when a jinchuriki releases the Tailed Beast Chakra, it's primarily red... This color is a bit strange."
Oyashiro pondered.
"Whose subordinate is that female ninja?"
Miyako asked.
"The big merchant Tsuruta, the president of Tsuruta Enterprise. I've heard he's recently been smuggling drugs, though it's only hearsay, without concrete evidence."
"Tsuruta Enterprise? That large pharmaceutical company? When Shion Flower Pharmaceutical Company first came out, it received a lot of care from him."
Miyako commented.
"Well, now he's no longer a match for you and Sosuke."
Oyashiro smiled.
"Oyashiro, can you help me investigate? I'm interested in the drug that ninja took. If possible, I'd like to get some samples."
Miyako requested.
"No problem, just wait a moment."
Oyashiro agreed to Miyako's request without hesitation, as it was a trivial task for him.
Oyashiro left the VIP room and returned approximately half an hour later with a big smile.
Miyako turned to him and asked, "How was it?"
Oyashiro took out two red capsules from his pocket and said, "These are the forbidden drugs Tsuruta just bought. They are said to be a kind of enhancing medicine that greatly amplifies a ninja's chakra power."
"What's the origin of the medicine? Did Tsuruta Enterprise develop it themselves?"
Miyako asked as she took the two red capsules from Oyashiro.
"No, it's not produced by Tsuruta Enterprise. According to Tsuruta's vague hints, the medicine originates from the Land of Fire."
"Land of Fire?"
Miyako furrowed her brow deeply.
"He didn't specify where in the Land of Fire or from whose hands he obtained it because he needs to keep his partner a secret."
Oyashiro spread his hands helplessly.
"Regardless, thank you this time."
Miyako nodded, not paying much mind.
"We're old friends; no need to be so formal."
"I'll have someone send over the payment for the ninja later."
"Haha, I was just joking earlier; you can give me those ninjas at cost price. Honestly, if I really accepted them at ten times the price, I'd feel a bit guilty."
Oyashiro said with a laugh.
"No need to save money for me."
"That's not the reason. No matter what, my daughter has settled down over there in the Land of Demons. Although she can't acknowledge me, I still owe you a thank you. Honestly, I'm not a very qualified father."
Oyashiro sighed, a guilty expression appearing on his face.
"This place doesn't suit you."
Miyako said earnestly.
"No need to recruit me; I don't want to trouble anyone. I, like Uchiha Itachi from your Uchiha Clan, am a sinner who slaughtered countless of my kind. Someone like me is adequately surviving in such a dirty corner."
Oyashiro knew what Miyako wanted to say, and he shook his head.
Even though he knew that with his ties to Miyako and her husband, he could thrive in the Land of Demons, a man like him, who bathed in the blood of his kin, was unfit to live under the sun.
The brightness was too dazzling; the darkness was his true home.
In this regard, he was very grateful to the Miyako couple for sheltering his daughter.
No matter how he turned out, he didn't want his daughter to live in such a filthy place.
After all, his daughter is quite adorable.
Thinking of his daughter's incredibly cute face, Oyashiro felt motivated to continue living.
"Alright, if you ever change your mind, Sosuke and I welcome you anytime. Also, don't die."
Miyako seemed to admonish Oyashiro.
Although Oyashiro was powerful enough that even when confronted by a ninja of the Sannin level, he could retreat comfortably if defeated.
But the saying goes, "Often walk by the river, how can your shoes not get wet?"
This isolated place shrouded in thick fog, every day plays out various ugly dramas, and she worried that one day Oyashiro would be silently assassinated here.