I Hear Your Voice Cast and Characters

9-year-old Soo-Ha (later played by Lee Jong-Suk) and his father are riding together in a car when they are suddenly struck by a truck driven by Min Joon-Kook (Jung Woong-In). Min Joon-Kook then gets out of his truck and jumps on the hood of their car. Soo-Ha and Min Joon-Kook's eyes meet through the windshield of his father's car. Suddenly, Soo-Ha is able to hear the man's violent thoughts .. "I need to finish this."

Min Joon-Kook goes to his truck and gets out a baseball bat. He fatally strikes Soo-Ha's father dead with the bat. Soo-Ha is in complete shock. When Min Joon-Kook turns to strike Soo-Ho, the sound of a camera flash goes off and Min Joon-Kook goes after whoever is taking the pictures. This saves Soo-Ha's life.

The person with the camera is a young girl named Hye-Sung (later played by Lee Bo-Young). Later, Hye-Sung testifies against Min Joon-Kook in court. Min Joon-Kook claims that Soo-Ha's father died in the car accident. Through the court proceedings, Soo-Ha falls in love with Hye-Sung. Soo-Ha promises to protect Hye-Sung from Min Joon-Kook, when he threatens to get revenge on her.

10 years later, Soo-Ha is now an exemplary high student. Nobody is aware that Soo-Ha possesses telepathic abilities.

Meanwhile, Hye-Sung now works as an attorney, but she doesn't uphold the virtues of her profession very well. She is also not very successful and barely makes $1,000 a month. Her mother then pushes her to apply for a public defender position due to its higher pay.

In the waiting room, prior to taking her interview, Kwan-Woo (Yoon Sang-Hyun) strikes up a conversation with Hye-Sung, but she ignores him. Kwan-Woo is applying for the same position. He originally worked as a police officer, but went back to law school to become a public defender. During her interview, Hye-Sung talks about the events that occurred 10 years ago and this helps her land the public defender position.

After Hye-Sung gets the job, her picture is posted in the newspaper. Soo-Ha sees her photo and becomes elated that he can finally see her. At the same time, Min Joon-Kook sees her photo while in prison. He is soon set to be released.




Lee Bo-Young as Jang Hye-Sung




Lee Jong-Suk as Park Soo-Ha




Yoon Sang-Hyun as Cha Kwan-Woo




Lee Da-Hee as Seo Do-Yeon




Kim Kwang-Kyu as Kim Kong-Sook




Jeong Dong-Hwan as Seo Dae-Seok





Kim Hae-Sook as Eo Choon-Sim




Jung Woong-In as Min Joon-Kook




Kim Ga-Eun as Ko Sung-Bin




Yun Ju-Sang - Shin Sang-Duk




Choi Sung-Joon - Choi Yoo-Chang




Kim Byung-Ok - Hwang Dal-Joong




Jang Hee-Soo - Do-Yeon's mother




Kim Hye-Yoon - Do-Yeon's high school friend




Park Doo-Sik - Kim Choong-Ki




Lee Jung-Hyuk - Lee Jung-Hoon




Kim Soo-Yeon - Moon Dong-Hee




Han Ki-Woong - Jung Pil-Jae




Han Ki-Won - Jung Pil-Seung




Park Chul-Hyun - disorderly student




Yeo Ho-Min - Policeman Woon-Seung




Jang Hee-Woong - prosecutor




Jo Deok-Hyeon - Soo-Ha's father




Lee Sol-Gu - detective




Choi Dae-Sung - Do-Yeon's office emplyee




Park Jung-Woo - Ha-Myung




Kim Gwang-In - chief prosecutor




Jung Geun - Kang Seung-Goo




Lee Dong-Jin - judge




Kim So-Hyun - Jang Hye-Sung




Goo Seung-Hyun - Park Soo-Ha




Jung Min-A - Seo Do-Yeon