Yoo Seung Ho has become the mystery character.

In MBC's "I Miss You," Yoo Seung Ho's character Kang Hyung Joon is creating more confusion and mystery around him, as the rapist Kang Sang Deuk is killed. There are three main questions about Hyung Joon.

- Who killed Kang Sang Deuk?

The person who goes to see Kang Sang Deuk after getting his phone call is Lee Soo Yeon. However, the criminal has black hair unlike Lee Soo Yeon's brown hair. Viewers think that it could have been Hyung Joon wearing a wig and he killed Sang Deuk after watching Lee Soo Yeon on the security cameras. After the criminal dies, Hyung Joon was shocked to be pulled over by a police. 

- Does Kang Hyung Joon really need a walking stick?

People are wondering if he's just using his disability as an excuse to hold on to Lee Soo Yeon. He said, "I can't chase you because of my leg. Don't run away." Kang Hyung Joon had driven Kim Sung Ho (Jun Kwang Ryul) to his death in order to not lose Lee Soo Yeon when they were just children.

- Is his mother really dead?

Many believe that his mother is probably alive. 14 years ago, Hyung Joon told Soo Yeon that he was alone in the world but we were never shown a scene or any proof.