On February 28 KST, 'Single's Inferno 4' star Lee Si Ahn appeared as a guest on Kian84's YouTube channel for an installment titled "A day in Single's Inferno Sian's Life".

On this episode, Kian84 visited Lee Si Ahn's home and got to know the star, hearing her open up about giving up on her dream of becoming a K-Pop idol. 

Naturally, the topic of 'Single's Inferno 4' came up soon after Kian84's arrival. When the webtoon artist asked, "What happened to you and Yook Jun Seo?", Lee Si Ahn first dodged the question by remarking, "He is a big fan of yours. He wanted me to relay that to you." 

Kian84 did not give up so easily, pressing, "Yeah, I heard. But what about you two? He isn't hiding in one of the rooms, is he?". Laughing at this, Lee Si Ahn answered vaguely, "We are all still really close, and we keep in touch often." 

In 'Single's Inferno 4', Lee Si Ahn and Yook Jun Seo chose each other and successfully escaped the 'Inferno'. After the show's conclusion, the two co-stars became wrapped up several in real-life dating allegations.

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