Kapanlagi.com - The drama Resident Playbook continues to capture attention with its surprising stories of young doctors. One character that stands out is Um Jae-Il, played by the handsome actor Kang You Seok.
In episode 9, the public was surprised by a flashback scene showing Um Jae-Il as a former idol. Not only that, he shone on stage alongside two members of TXT, namely Yeonjun and Soobin.
This moment immediately caught the attention of K-Drama and K-Pop fans. Moreover, Kang You Seok had previously shared a photo of his time with Yeonjun and Soobin while filming as members of the fictional group Hi-Boyz. KapanLagi.com has summarized from various sources, on Tuesday (13/05/2025).
1. Kang You Seok Captivates the Audience as Um Jae-Il in Resident Playbook

instagram.com/youseok_
The role of Um Jae-Il is successfully portrayed by Kang You Seok with charm. This character is known to have a past as an idol from the now-disbanded group Hi-Boyz.
His actions in episode 9 show a different side of Jae-Il. This transformation showcases Kang You Seok's flexible and impressive acting skills.
2. Hi-Boyz's Appearance Causes a Stir, Yeonjun and Soobin TXT Steal the Spotlight

Youtube.com/Stone Music Entertainment
The surprise comes from the appearance of Yeonjun and Soobin TXT as members of Hi-Boyz. Although they only appeared briefly, their charisma successfully captured the audience's attention.
This special collaboration makes the drama Resident Playbook feel fresher. The presence of these two famous K-Pop idols has left many fans curious about Um Jae-Il's past story.
3. Flashback Scene of Hi-Boyz Receives Praise, Makes Viewers Nostalgic

The flashback scene showcasing Hi-Boyz through a performance video during the karaoke scene in episode 9. The visuals and choreography among the members are so harmonious.
K-Pop fans welcomed this scene enthusiastically. Many admitted to being swept away by the atmosphere and hope Hi-Boyz can perform more in upcoming episodes.
4. BTS Photos with Yeonjun and Soobin, Kang You Seok Shares Moments

instagram.com/youseok_
Through his personal Instagram, Kang You Seok shared several behind-the-scenes shots while filming with Yeonjun and Soobin. These photos immediately received thousands of likes and comments.
In the photos, the three of them appear united and close like a real boy group. Many netizens praised their visuals and chemistry as members of Hi-Boyz.
5. Interesting Facts About Hi-Boyz, the Fictional Group that Became the Spotlight
Hi-Boyz is a fictional idol group in Resident Playbook, but they have managed to attract attention like a real group. The visuals of the members, choreography, and the songs performed are created with great detail.
The popularity of this group has made viewers hope for additional content such as an MV or special stage from Hi-Boyz. The character Um Jae-Il has also become deeper and more relatable thanks to this background.
6. The Transformation of Uhm Jae-Il Impresses Many Viewers

instagram.com/youseok_
Knowing that Um Jae-Il was once an idol adds a new dimension to his character development. Viewers gain a better understanding of his emotional side and struggles before becoming a doctor.
This transformation makes the character Uhm Jae-Il one of the most complex in the drama. Kang You Seok has also received much praise for his in-depth portrayal.
7. Stunning Visuals and Chemistry of Hi-Boyz Captivate Netizens
The visual appearance of the three Hi-Boyz members is truly captivating. Many netizens praise their outfits, styling, and expressions.
The natural chemistry between Kang You Seok, Yeonjun, and Soobin is a unique attraction. It's no wonder that many hope they will perform together again as this group.
8. Fans Hope for Additional Content from Hi-Boyz
Fan enthusiasm doesn't stop at episode 9. Many have started creating fan art, video edits, and theories about the past of Hi-Boyz.
Requests for additional content are emerging, ranging from behind-the-scenes to the potential official release of Hi-Boyz songs. The interaction between this drama and the K-Pop world is considered fresh and innovative.
“We want to see Hi-Boyz perform at a concert,” said a fan. This hope shows how significant the impact of these characters is on the audience.
(kpl/anf)
Disclaimer: This translation from Bahasa Indonesia to English has been generated by Artificial Intelligence.