My brother is FBI, and I am a crazy wife protector.

In Xiao Ai's helpless eyes, Minghui and her sister Mingmei decided to let her go back to elementary school with Minghui to experience life. She thought the name Haibara Ai was good, but she didn't want to go to elementary school. Unfortunately, Mingmei didn't stand by her because she was her biological sister.

At this time, Edogawa Conan, who has been transformed from high school detective Kudo Shinichi to a young boy, does not yet know that what awaits him is a double prank that will leave him speechless.

The next morning, Yamei, whose name and appearance had been changed, sent Minghui and Xiaoai to school. The two of them attracted considerable attention as soon as they entered the school. Xiao Ai's icy blue eyes were coupled with a coldness that kept strangers away. Minghui entered the school with her. They didn't say anything, but it seemed like everything was said. Everyone knew at first glance that these two might be a couple, because they really matched well. After completing the formalities, Masami returned to the Kudo family's house. Teacher Xiaolin took the two of them to meet other students in the class. Due to Minghui's appearance, Xiao Ai naturally sat at the same table as Minghui.

When he decided to let Xiao Ai go to elementary school last night, Minghui told Xiao Ai about Kudo Shinichi's transformation into Edogawa Conan. Then Minghui went to Dr. A Li and asked the doctor to promise Xiao Ai to live with him at Dr. A Li's house. Because if the Kudo family's house, which had been unoccupied until now, was suddenly occupied, it might attract the attention of Gin and the others. When Xiao Ai told the address of Dr. A Li's home, Conan realized something was wrong. The address was near his home, but he didn't know there was anyone with the surname Haiyuan at all, which made him feel something was wrong.

After school, the three little ones and Conan were going to play football, but they found a power of attorney in the shoe cabinet. The three little ones invited Xiao Ai and Minghui to join the Junior Detective Team, and Minghui directly agreed on behalf of himself and Xiao Ai. He also carried his own pistol with him at all times, but he did not let the three little ones see it.

Then the Junior Detective Team began to investigate the case where the little boy from the next class asked them to help find his brother. There were no other clues, so they had to go to his house to take a look. When they got there, Ayumi found a bunch of replicas of famous paintings under the bed. There was a portrait of Natsume Soseki. According to what the little boy said, Conan thought it was the accomplices of the men in black who had made his body smaller. Then he followed Mitsuhiko and the others and started looking for the kidnapped person based on a series of evidence.

After Minghui told them, he took Xiao Ai directly to the newspaper office next to the station police station. The big guy outside, Minghui, only had to trip him up to knock him unconscious. The woman inside also has an older-looking person. Minghui doesn't have power-enhancing shoes or anesthesia needles. When the woman pointed the gun at his head, Minghui directly grabbed her wrist holding the gun, and then he tried to throw her over her shoulder but failed, but the gun fell to the ground. Minghui reached back and took out his pistol and pointed it at the woman. The gun on the ground was picked up by Xiao Ai, and now the situation was that the two children were pointing the gun at the two adults.

Just at this time, San Xiaozhi and Conan arrived, and Minghui asked Conan and the others to call the police immediately. After a while, Officer Megure arrived and took away the prisoner Silver Fox who made counterfeit money. The little boy Junye successfully rescued his brother.

The Young Detective Team once again solved the case, but Conan felt that the two children Minghui and Haihara Ai were not ordinary people. It is worth mentioning that Minghui also put away his gun when they went to call the police. He got up because Conan was next to him. Later, he told Officer Megure that it was just a toy gun, but Officer Megure actually believed it without any doubt.

Later, everyone went home, and Conan also found out that Xiao Ai and Minghui were from the organization.

"Detective Kudo Shinichi, do you really not know the place next to your home?"Minghui said

"APTX4869, the name of the medicine you took. That's right, I invented the medicine that makes your body smaller."Xiao Ai also said to Conan.

Conan hurried to Dr. A Li's house, only to find that nothing happened to Dr. A Li. Then Xiao Ai Conan said about himself, and Minghui also said:"Kudo Shinichi, We are classmates, do you remember? I'm the new high school student transferred to your class. In addition, I am a Japanese police officer. I exposed my identity to save someone, and then I took the medicine and became smaller without any other options."

"Then please give me more advice in the future, great detective."Minghui said.

In this way, Minghui told Conan, Dr. A Li and Xiao Ai about saving Ming Mei. Xiao Ai heard that he had saved his sister and gave him a hug on the spot. They were childhood sweethearts anyway. After all, she only had her sister as her only relative, so it was right to be a little excited when she heard that her sister had been rescued.