Haiyuan Ai, whose real name is Miyano Shiho, is one of the main characters in the Japanese anime Detective Conan. She appeared in the TV series1episode 29. Her real identity is Shirley, a member of the black organization and the inventor of "APTX4869". Its drugs turned Kudou Shinichi, a high school detective, into a pupil, alias "Edogawa Conan", and started the whole story. Later, because her sister Miyano Akemi was killed, she took drugs and fled the organization in despair. Currently boarding at Agasa Hiroshi's home and studying in Class B, Grade One, Didan Primary School.

The Night Baron is a character written by Conan's father Kudou Yū saku.

Sometimes it is a rogue who moves at night, and sometimes it is a ruthless killer, which is almost unknown to reasoning enthusiasts. Vivian Kudo is also called "Baroness Night" because she has been played by many people, such as Youzuo. In addition, "Night Baron" is also the name of a computer virus that appeared in Detective Conan. This virus is widely circulated and extremely harmful. Black organizations use this virus to protect internal files.