Girls' Generation's Yuri, KARA's Seungyeon, and Park Tae Hwan are making special appearances on 'Lovely Runner'.

On April 5, tvN revealed previews of Yuri, Seungyeon, and Park Tae Hwan's cameos in the upcoming drama series written by 'True Beauty' writer Lee Si Eun. In the still cuts, Yuri wears a stage outfit from Girls' Generation's iconic "Genie" era, 2008 Beijing Olympics gold medalist Park Tae Hwan gets in the pool, and Seungyeon is a radio show DJ. 

'Lovely Runner' is a time-slip romance drama that revolves around the question, "What would you do if you had the chance to save your ultimate bias?" Kim Hye Yoon stars as devoted fan Im Sol, who goes back in time to 2008 in order to save her ultimate bias Ryu Sun Jae (played by Byun Woo Seok).

'Lovely Runner' premieres on April 8 at 8:50PM KST.