Shiyu then immediately used the Flying Thunder God to return to Kakuzu's side.
"How is it? Is there any news about Mother?" Yin asked anxiously.
"I've searched the entire ocean, but there's no trace of your mother. There are two possibilities now: first, your mother was swept away by the sea, which is why we can't find her."
"The second possibility is that your mother didn't die at all, or that she just wanted us to think she was dead," Shiyu guessed.
"Why would she make us think she was dead?" Ichikawa In, expressing his utter incomprehension.
"I don't know why either. Well then, there are no more clues here. Let's go back to your residence in Yichuan, the Daimyo City, and then make further plans."
Shiyu doesn't have any good solutions right now. For some reason, Shiyu always feels that the disappearance of Lady Sanjo is related to the previous assassination attempt.
Shiyu and Hikari then returned to the mansion. The clues had temporarily run dry, Shiyu and Hikari had no way to investigate, so they could only wait.
However, perhaps it was a stroke of luck that Shiyu was blessed, because shortly after returning to the manor, the system's voice rang out.
"You've been asleep for a really long time this time, host! Did you miss me?" the system asked.
"Ha, I've been waiting for you! There's no blood test or DNA test in this era. I wonder if you can help me find out whose blood it is?" Shiyu asked.
"Are you talking to me, host? I'm a system! I can help you absorb and fuse bloodlines! Not to mention, I can detect whose blood it is." The system said, somewhat incredulously.
"And if you're so powerful, why did something go wrong when you rewarded me with the Otsutsuki bloodline at the beginning?" Shiyu immediately challenged.
"Sigh, isn't that because you already had the Otsutsuki bloodline in your body from a very early age? You're Hyuga and Uchiha Clan, who would have thought? Even in the original story, this never happened before. Because you already had some special bloodlines, there was a slight deviation when the fusion occurred at the beginning."
"Besides, didn't I reward you with an opportunity to strengthen your bloodline? You haven't used it yet, have you?" the system said.
"My current strength is sufficient. We can talk about strengthening myself when necessary. Right now, only you can help me analyze my blood," Shiyu pleaded.
"If you want me to test whose blood this is, please collect the blood samples from those people first so I can make a comparison," the system said.
"Okay. No problem. How long will it take you to get the results?" Shiyu asked.
"It will probably only take a few minutes," the system replied.
"Okay." Shiyu naturally wanted to collect the bloodline of the Ichikawa Haru, his eldest son Ichikawa Yu, and his second son Ichikawa Noboru. As for Ichikawa In, Shiyu didn't need to.
The blood samples tested were of two kinds: one was from Lady Sanjo's room, and the other was from a pool of blood left on the ground near the cliff edge.
It was incredibly easy for Shiyu to obtain everyone's blood. He didn't need to go through any trouble at all. He only needed to touch the other person, and with the help of the system, he could condense the absorbed blood back into a cohesive form.
In this Shiyu obtained the blood of the three people, and Shiyu had the system compare this blood with the two previous blood samples.
Ichikawa In was standing next to Shiyu was pretending to be writing something in a notebook, claiming to be analyzing blood.
"System, have the results come out yet?"
The system immediately replied, "Of course, the first result is already achieved."
"I would like to ask, whose blood was the first pool of blood among the three of them?" Shiyu asked.
The system replied, "The first pool of blood, which is the blood you mentioned inside the house, has been analyzed and is exactly the same as the blood of Ichikawa Haru, the daimyo of the Land of Water."
"In other words, the person injured in the room was not Lady Sanjo, but Ichikawa Haru," the system said.
Shiyu then told Ichikawa In the result.
"What? Father was injured during his argument with Mother? Why is that? Father couldn't even beat Mother?" Ichikawa In was incredulous.
Shiyu shook her head and said, "Yin, do you remember your father's hands were wrapped in many bandages? If I'm not mistaken, he was injured when he argued with your mother."
"Of course, you don't need to think too much about it, because it might not have been your mother who did it. It's possible that your father accidentally hurt himself. So it seems that your mother wasn't beaten or tortured by your father; rather, it was your father who was injured," Shiyu explained.
Yin then nodded and said, "Yes, I know my father. He's a man who rarely fights. Even if he's injured, he won't say anything. I'm even more curious about what happened between them."
"That's not the point right now. The point is the second pool of blood," Shiyu said.
"System, how's it going? How's the second blood analysis coming along?" Shiyu asked again.
The system then replied, "Hmm, the second type of blood is a bit more complicated. I'll need a little more time."
"That's not right. This person's blood isn't in the blood sample you gave me," the system said.
"That could be Yin's mother's blood," Shiyu guessed.
"No. This second blood sample I analyzed not only contains the blood of two people, but these two people's blood also seem to lack any similar genetic material. In general, these two people should not be related by blood," the system replied.
Shiyu was somewhat stunned after hearing the result.
"No blood relation!? System, can you detect which of the three blood samples this is from!?"
The system shook its head and said, "This is rather difficult to predict; I need a little more time."
Shiyu then told Ichikawa In the preliminary results, Ichikawa In also taken aback and asked, "If the blood on the cliff isn't related by blood, could it be the blood of my father and mother? But they aren't related by blood."
Shiyu then shook her head and said, "I don't know yet. Wait a moment. I'll have the results soon. Once I have the results, our reasoning should be much clearer."
After a while, the system suddenly shouted.
"The results are in! Although the blood on this cliff belongs to two people, one of them is a sample of the blood you gave me!" the system said excitedly.
"Oh!? Tell me, whose is it? Ichikawa Haru? Ichikawa Yu? Or Ichikawa Noboru!?" Shiyu asked anxiously.
"This is Ichikawa Yu's blood!"
Shiyu immediately told Yin the test results, and Yin also looked incredulous.
"I never imagined it was my eldest brother! Could it be that he killed Mother?!"