Serayo’s identity is indeed suspicious:

1. When she first appeared, she knew that Xiaolan was the best in karate in Kanto and even called Conan by name. You can tell about the Kanto Champion from Sonoko's words, but what about the name? Before she called Conan, neither Xiaolan nor Sonoko called Conan's name, which could not be heard from their conversation. So it proves that she knew about Conan before.

2. After her reasoning "failed", she covered one eye and stared at Conan with the other eye (see File.770 and TV 647 for details). Obviously paying attention to Conan's performance. It is learned from the later chapters that there are people around her who know Shinichi very well (see File.801 and TV 675), so Sera may investigate and suspect that Conan is Shinichi. And her failure in reasoning in this episode was most likely done on purpose to observe Conan's actions.

While testing her modus operandi, she deliberately pushed her wheelchair close to where Conan was hiding. Combined with what she said before about her "good ears", it is very likely that she had heard Conan's new voice. , and it is speculated that Conan is Kudo Shinichi. During this period, he also deliberately asked Kudo on the phone about the situation at the scene. Kudo (Conan) replied that he was not at the scene so he could not confirm. This was probably done deliberately to trick Conan.

3. In the reasoning showdown between Kudo and Hattori on TV 651, when Conan became confident about the progress of the case, he smiled slightly. Sera saw it and said: "It seems that the winner has been decided." This explains Sera's identity towards Conan. Understand something.

4. In TV 651, Serang once said to Xiaolan: "My mother has big breasts, right?" This means that Xiaolan may know Serang's mother. In addition, there are many hints in File.844~846/903/950/953 that she and her mother met Xiaolan and Shinichi.

5． In TV 675, when Sera heard Xiaoran say: "Conan and Shinichi both like Sherlock Holmes very much." Sera said in his heart: "I know this, from a long time ago..." It was implied that Sera had met Shinichi. , or have been learning about Kudo Shinichi from a certain "mysterious person", and have a certain level of understanding of Shinichi.

6. Sera has always had a strong interest in Haiyuan. He has secretly investigated and tried to get close to Haiyuan many times (TV 656~657, 675, 699, 701, etc.).

7． In TV 728, Xiaolan said that as soon as she saw Sera hurriedly running away in the background, the sound of soft waves could be heard in her ears, implying that Xiaolan had met Sera before. Conan also felt as if he had met Sera before. Sera was noncommittal about this, but was hinting at Conan.

8. Sera also mentioned that he has a second brother who "looks more like his father, and is not like Sera himself or his eldest brother who I heard has passed away." Now the second brother is busy with important work and his whereabouts are unknown, but he will contact Seriang and exchange reasoning. It also implies that the second brother knows about Conan's reasoning ability, and may even know more details about Conan.

9． There was an unidentified mysterious girl in Sera's room, who showed calm analytical skills and said that Conan "can't believe it yet" and asked Sera to call herself his "sister outside the realm" when necessary. He intended to test Conan's abilities and said, "If Conan is not suitable, he must leave immediately and explore new areas." It is revealed in File.953 that the "sister outside the realm" is Sera's mother.

Summary: Based on the above information, it can be concluded that Sera has a close relationship with the main plot. She herself may have met Shinichi and Xiaolan, and some of her relatives also know and are interested in Conan. characters. Sera has also investigated Conan and the people around him, including Haiyuan (see the "Related Clues" section for details). But why Sera does this remains to be seen.

Statement 1: Is Sera a related figure to the FBI (Shuichi Akai)?

In TV 648, Conan once felt: "He looks very similar to someone Conan knows." In TV 651, Judy and Kamel both said that Sera looked very similar to someone. When everyone mistakenly thought she was a boy, James could tell at a glance that Serang was a girl. Therefore, Sera is likely to be an FBI-related figure, and the most likely one is Akai Shuichi's sister.

Considering the character prototype, Sera Masumi's prototype is Char's sister in "Mobile Suit Gundam" - Sera Mars; and Char is the prototype of Shuichi Akai. Therefore, it is inferred that Sera may be brother and sister with Akai Shuichi. And in terms of character image, Sera's eye contour features and hair features (small waves) are exactly the same as Akai Shuichi.

If she is Shuichi's sister, she may be known to both Judy and Kamel at the same time. Judy's abnormal expression on Sera's photo shows this even more. In TV 675, Sera said, "There was someone beside me who never made me laugh." Then he found Scar Akai and chased after him. Although it is not certain, it is most likely referring to Shuichi.

In TV 744, Sai Liang said that Jeet Kune Do was taught by his elder brother, and his level was three times as high as his own. Some readers think this is Aoyama paying homage to the setting in "Gundam" that the red Zaku driven by Char has "three times the speed of a normal machine".

Sera was confirmed to be Akai Shuichi's sister in TV 703 and File. 938. The Conan News Agency of File. 821 confirmed that Sera Masumi's prototype is Sera Mars, and further confirmed Sera's identity. It is revealed in File.953 that the "sister outside the realm" is Sera's mother.

Doubtful point: Although this statement has been confirmed, although it proves the relationship between Sera and Akai, it does not explain Sera's other identities. And it is still unclear how Sera learned about Akai's death, whether he knew the inside story of Akai's death, and how deeply he understood Akai's plan.

Story 2: Is Sera a related person to Subaru Okiya?

As for Okiya Subaru, Sera Masumi heard him reassuringly say "It's unfounded" (TV 656) without ever seeing him, and seemed to be very concerned about Okiya Subaru's existence. And because Subaru Okiya is very interested in Shinichi's identity (later clearly learned about it on TV 691), and is familiar with Ran's karate level, the same situation applies to Sera, so Sera is likely to be related to Subaru Okiya. At the end of TV 704, Subaru Okiya opens his eyes, and his eyes are very similar to Sera, which also implies that Subaru Okiya and Sera are related by blood.

TV 783 (File.898) confirmed that Subaru Okiya’s true identity is Shuichi Akai, so it is equivalent to the first statement.

Story 3: Is Sera a related person to Toru Amuro?

In TV 671, Toru Amuro showed interest in the "young female detective" (Masumi Sera), and at the same time, Sera also became interested in Amuro. In TV 674, Amuro showed a surprised expression after seeing Sera and thought, "Why is this guy here?" It was obvious that Toru Amuro might know Sera. In File.936, Sera meets Toru Amuro and asks Amuro if he has seen her before, but Amuro denies it. Sera said that his brother's friend once taught him bass. Amuro asked Sera if he remembered the man's appearance, and Sera asked Amuro why he knew he was a male. It shows that the two are indeed related to a certain extent.

Some people speculate that Toru Amuro is the second brother Sera Masumi mentioned. Because Toru Amuro is a member of the organization, his family will not know his identity and work, and he is good at reasoning, which is consistent with the characteristics of Sera. The second brother is "not like Sera himself and the eldest brother". If that refers to looks, Sera and Amuro also have quite different looks (if "dissimilar" refers to other aspects such as personality, it is still unclear). In addition, according to the age of the second brother's high school classmates in TV 754, it can be inferred that the second brother is 28~29 years old, and Toru Amuro is also 29 years old, which meets the conditions.

However, some people think that Toru Amuro's words "Why are you here" in TV 674 were said to Belmode on the overpass or to Subaru Okiya who passed by while driving, not to Sera. If Toru Amuro is indeed Sera's second brother, then Toru Amuro and Shuichi Akai are also brothers. But Amuro and Akai are hostile to each other, and Amuro also hates Akai, and "Akai" who appears at the end of the train chapter also directly attacks Toru Amuro with a grenade - this kind of brotherly antagonism cannot be fully supported by the plot. Moreover, it can be seen from TV 783 that Akai found out his real name and identity as a police undercover through the nickname "Zero" revealed by Amuro to Conan. If Amuro is his younger brother, there is no need to investigate to find out his identity. Moreover, even though Toru Amuro knew that Sera might come to Mori's house, he still worked in the Polo Cafe downstairs of Mori's house under his true identity. This was inconsistent with Sera's second brother's practice of deliberately hiding his whereabouts from Sera. In addition, Toru Amuro had previously disguised himself as "Scarred Akai" to test whether Akai was dead to the FBI, Sera and others. If Amuro and Sera were brother and sister, and Amuro knew that Sera was not aware of his identity as a member of the black organization, then Amuro would ask Sera to To test whether the eldest brother Akai is dead, you can ask him directly or use a trick occasionally. Pretending to be "Scarred Akai" is to seek the far away.

So the possibility that "Amuro Toru is Sera's second brother" can basically be ruled out.

Section 4: Is Sera a related figure to Haneda Hideyoshi?

In File.902, "Sister Outside the Field" paid close attention to Haneda Hideyoshi's "Celebrity Battle" competition, and was very happy after Hideyoshi won the competition. Subaru Okiya (aka Shuichi Akai) also smiled after seeing the news that Hideyoshi won the "Seven Crowns", indicating that there was indeed an "unexpected connection" between the three (End of File.902). Mazumi and Yumi talked about their brother and ex-boyfriend at the same time. They both had the same appearance, dress, and ability. They even had the same catchphrase: "I am the best in Japan." He is good at remembering such things. No, maybe he is the world's best. one! "

Some people speculate that Haneda Hideyoshi is the second brother mentioned by Sera Masumi. Hideyoshi has been in Japan and is good at reasoning. He also noticed that Conan's reasoning ability is unusual, which is consistent with Sera's narrative. The second brother" Sera himself is not like his eldest brother," and Sera and Hideyoshi look very different. Hideyoshi does not know martial arts and has an average physique, which is obviously different from Sera and Shuichi. Hideyoshi is 28 years old, which is also in line with the age of the second brother's high school classmates. scope.

In addition, although the name "Haneda Hideyoshi" comes from "Hashiba Hideyoshi", the Japanese pronunciation of "Hideyoshi" (しゅうきち, Shūkichi) in "Haneda Hideyoshi" is the same as the "Hideyoshi" (ひでよし, Hideyoshi) in "Hashiba Hideyoshi" Completely different, but very close to the pronunciation of "Shūichi" (しゅういち, Shūichi) in "Akai Shuichi". It is not clear whether the author is using this to hint at the connection between the two.

Objection: If Haneda Hideyoshi is Sera's second brother, and both his eldest brother Shuichi and his "sister outside the field" know that the second brother's current profession is a chess player, when news about Hideyoshi's competition is overwhelming, Hideyoshi drinks When fans would recognize him and ask for his autograph while drinking coffee, it was impossible for Serang not to notice that the "seven-time champion" was his second brother. Although there is a possibility that Sera actually knew the identity of his second brother, but did not explain it to Conan and others - even so, Sera never paid attention to any news about Hideyoshi, including important competitions such as "Celebrity Battle", and even "field" It is strange and unreasonable for the "outside sister" to focus on the "celebrity war". Moreover, it can be seen from TV 731~732 that Hideyoshi lives alone in a high-end apartment, so there is no reason to refuse Sera to stay.

The possibility of this statement is unclear and needs further observation.

In File.952, Sera's expression changes drastically when he hears the name Haneda Koji, and Haneda Koji is Haneda Hideyoshi's adopted brother, which indirectly proves the connection between Sera and Haneda Hideyoshi.