Group ZEROBASEONE members Sung Hanbin and Jang Hao recently appeared as guests on the TVING original show "Transit Love 4." They added energy to the program by immersing themselves in the romantic stories of the cast in episode 19, released on January 7. Despite their busy schedules, Sung Hanbin and Jang Hao revealed that they are avid viewers of the "Transit Love" series.

The appearance of the two members sparked great interest among fans and viewers. They showed joy and sympathy while watching the complex relationships of the cast. Especially when the heart-fluttering dating scenes continued, smiles blossomed on the faces of both members. Sung Hanbin reacted by saying, "There are many scenes like in a movie," perfectly empathizing with the situations. Jang Hao also expressed his honest feelings, saying, "It hurts so much, I'm going crazy."

Jang Hao previously sang the OST "I WANNA KNOW" for "Transit Love 3." This song highlights Jang Hao's warm vocal tone and received great love from listeners both domestically and internationally, ranking first on the Circle Chart download chart and ninth on the US Billboard World Digital Song Sales chart at the time of its release.

ZEROBASEONE is scheduled to release a special limited album titled "RE-FLOW" on February 2. Ahead of the album release, they will pre-release the album tracks and music videos twice, on January 9 and 23 respectively. ZEROBASEONE plans to continue communicating with fans through active promotions.