In the episode broadcast on April 24 of the variety show "I live alone" on Munhwa Broadcasting Corporation, the daily life of actor Yoo Su Bin - who has lived independently for 6 years - is revealed.
In this episode, Yoo Su Bin reunites with two "genuine" close friends, IU and Lee Yeon - people he met through the movie "Perfect crown" (or "Wife of the 21st Century Army"). They go together to a familiar restaurant.
Looking at IU, Yoo Su Bin asked: "Don't you put Shin-chan on your bag today?". Hearing that, IU immediately brought out the friendship keychain hanging on her bag and showed "sulking" at Yoo Su Bin for not having a keychain: "I thought you would always carry it with you.
In the conversation, IU attracted attention when sharing about the friendship story of the 3 people, revealing that 2 actors Yoo Su Bin and Lee Yeon were by her side at the most important times.

According to IU, these 2 actors are among the very few friends who attended her grandfather's funeral, which made not only her but also the whole family extremely touched.
My parents are really grateful to you two. Among my friends, almost only you two come," IU said.
She also recounted a small but sincere action during the tiring funeral period. Both Yoo Soo Bin and Lee Yeon brought chocolate to the funeral, in which Yoo Soo Bin also prepared a zip bag containing many different types.
“Maybe it's just a very small thing, but it has given me strength,” IU shared, explaining that that subtle care has comforted her family and herself in times of grief.
Meanwhile, the movie "Perfect crown" achieved impressive results after 3 weeks of airing on MBC and the Disney+ platform. After only 4 episodes, the movie achieved a rating of 11.1% on MBC.

Set in a fictional constitutional monarchy in 21st century Korea, "Perfect crown" tells the love story between Sung Hee Joo (IU) - CEO of Castle Beauty, a wealthy female heir who has everything but is only a commoner; and Dai Quan Lee Ahn (Byeon Woo Seok) - a prince who has to live quietly because fate does not allow him to succeed the throne.
Facing their own barriers, the two decided to sign a marriage contract to change their destiny.
Lee Yeon plays Do Hye Jung - Sung Hee Joo's close secretary, they are close friends, working together to rise to the number one position in the industry.
Do Hye Jung - who does not hesitate to both praise and nag Hee Joo - initially opposed her bold idea of enhancing social status by marrying the prince, but then gradually switched to actively supporting it.
Just like Hee Joo has a soulmate Hye Jung, alongside Lee Ahn's Big Army is bodyguard Choi Hyun (Yoo Su Bin), who has a bond even stronger than blood. Although often grumbling about worrying about the prince, Choi Hyun's loyalty to Lee Ahn is boundless.