1. Yoo In-Na
IU and Yoo In-Na met in a variety show called Heroes. The said variety show was aired from year 2010 to 2011 with a total of 40 episodes. From there they managed to create a wonderful relationship as best friends up to this date.
Yoo In-Na is popularly known not just as IU's bestfriend but as her star and muse when she dedicated her win of 'Album of The Year' in 2017 Melon Music Awards. Despite the 11 years of age gap, the two surprisingly understand each other and grew closer as time passed by.
The two of them became important part of each other's life, UAENAs and Yoo In-Na's fans know that. Yoo In-Na is supporting IU by attending to her concerts and spending her time together during special occasions like Valentines day, vacations to domestic places or foreign countries, or maybe even on a regular day as well. So far, the two have already visited America, Jeju island and Rome together.
These two were able to work together too in a series of commercial for Hyundai i30. They displayed how comfortable they really were to each other and everyone was left in awe because of that.
2. Kim Soo Hyun
Kim Soo Hyun and IU first worked together in a popular drama Dream High (2011). Since then their friendship blooms and is evident through their constant want to work with each other.
The two reunited in 'The Producers' drama (2015), wherein Kim Soo Hyun's character was IU's character's love interest.
In 2017, they supported each other's projects as Kim Soo Hyun participated in IU's music video for 'Ending Scene' as per her request. IU on the other hand, did a cameo in Kim Soo Hyun's film 'Real' the same year. Although IU's cameo there was small that not everyone was able to notice that it was her. Some discovered it was her only after seeing the credits of the movie.
In 2019, Kim Soo Hyun supported IU's hit drama called 'Hotel Del Luna'. He did a cameo as the hotel's newest owner in the last episode. It was also Kim Soo Hyun's appearance in a drama after he got discharged from serving the military.
Aren't they so supportive and faithful to each other? I will look forward to their projects together again.



