Sara Da Odin
Voiced by: Hinaki Yano
A 13-year-old princess from another world who ends up living with Sōsuke. She can use magic. She becomes a fan of Case Closed. Over time she starts thinking of Sōsuke like a surrogate father, and eventually revealed to have fallen in love with him due to his kindness. Her new name is Sara Kusanagi. She later transfers to an elementary school, much to her friend Yuna’s chagrin since they would not be going to the same school.

Livia Do Udis
Voiced by: M.A.O
A knight who protected Sara in the other world. After finding herself in Japan, she initially lives a homeless life while trying to find Sara before becoming Noa’s roommate. Here she is reunited with Sara. She reunites with Sara and lands a job as an assistant at Sosuke’s agency, but is immediately fired after struggling. After this, she takes on various jobs, only to leave them early for various reasons. She gains a taste for eating grasshoppers. She would go on to join Puriketsu’s reformed band as a guitarist.

Sōsuke Kaburaya
Voiced by: Makoto Furukawa
A 29-year-old private detective who operates an agency in Gifu. Sara ends up living with him and assisting him in his work. His real last name is Kusanagi and he is the son of Isao, a veteran private detective.

Puriketsu
Voiced by: Yō Taichi
She is an aspiring musician who started out being the vocalist of the band Setsuko, That Ain’t the Drop before it was disbanded. She formerly worked at a cabaret club that Livia briefly worked at before it was shut down. Later on, she reforms her band with Livia and Noa as members. Although the band quickly gained popularity, they had to put their activities on hold after Noa was arrested. Her real name is Asumi Yumisahi.

Noa Minakami
Voiced by: Akane Fujita
A 22-year-old woman who is the leader of a cult. She develops an obsession for Livia after meeting her. She is also the songwriter for Puriketsu’s reformed band, being a skilled musician herself. However, she is later arrested and jailed due to insider trading. Her real name is Noa Kinoshita.

Brenda Aisaki
Voiced by: Manami Numakura
A lawyer who frequently works with Sōsuke. Despite her appearance, she is actually 34 years old, making her older than him. She is in love with Sosuke.

Yuna Naganawa
Voiced by: Yūki Takada
A middle school student who becomes friends with Sara after she and Sosuke helped resolve her bullying problems.

Haruka Neya
Voiced by: Mizuki Mano
A detective who worked under Sosuke before he left the agency. She is in love with Sosuke.

Isao Kusanagi
Voiced by: Yōji Ueda
He is Sōsuke’s father and a veteran detective.

Takeo
Voiced by: Shinnosuke Tachibana
A delinquent who often tricks Livia into doing odd jobs, such as becoming a hostess and a scalper. His real name is Masatake Ozeki. A public security policeman who pretends to be a well-connected gangster in the underworld. Investigate criminal organizations active in the city, and sometimes gain the trust of members as accomplices in crime.

Suzuki
Voiced by: Kohsuke Toriumi
A homeless man that Livia used to live with before leaving to go back to being a writer. When he came back to visit Livia, he was asked to write a song for Puriketsu, Noa, and Livia’s band. His real name is Akira Suzukiri.