The YouTube channel Garo Sero Research Institute has stirred up unexpected talk about the friendship between actors Park Seo-joon and Kim Soo-hyun, suggesting their bond might not be as strong as it seems. This comes after referencing a past interview where Park Seo-joon spoke about how Kim Soo-hyun helped him join an agency after his military service.
Revisiting a Past Connection
Back in October of the previous year, Park Seo-joon appeared on Jung Jae-hyung’s YouTube channel “Fairy Jae-hyung.” During this conversation, Park Seo-joon shared a story about how he was able to sign with an agency after completing his military service, thanks to Kim Soo-hyun’s assistance.
After I was discharged, a friend of a friend, who was close to Kim Soo-hyun at the time, made a request on my behalf. They asked if it would be possible for me to meet with the company (Kim Soo-hyun’s agency), and Kim Soo-hyun gladly arranged it.
Park Seo-joon also expressed his gratitude for this opportunity.
That’s how I ended up visiting the company. On the day I went, the CEO immediately brought up the contract. He handed me the contract, confidently saying, ‘This is a standard contract, but if you’re uncertain, you can consult a lawyer.’ Since it was my first time visiting an agency, I told them I would review it and get back to them. The company was so big that, in the end, I signed with them.
Garo Sero’s Interpretation and Instagram Post
However, Kim Se-ui, the representative of Garo Sero Research Institute, offered a different perspective on the actors’ relationship. He claimed their friendship was “weaker than a piece of paper.” He also pointed to a recent Instagram post by Park Seo-joon as potentially having a hidden meaning.
On March 16, Park Seo-joon posted photos taken in Paris with the caption, “What did I do in Paris? Horizontal.“

Kim Se-ui speculated that this caption was a subtle jab, noting, “Kim Soo-hyun’s nickname was ‘YouTuber Kim Paris.’ He exchanged love letters with Kim Sae-ron, referring to each other as ‘horizontal and vertical.’ Park Seo-joon’s caption, ‘What did I do in Paris? Horizontal,’ seems to hint at this.”
Last night, I checked Park Seo-joon’s Instagram. Isn’t it quite meaningful?
Kim Se-ui even left a comment on Park Seo-joon’s post, stating his support for the actor and reiterating his view on the friendship.
I even left a comment there. I support Park Seo-joon. Their friendship is truly weaker than a piece of paper.
He also left a public comment directly addressing the situation.
YouTuber Kim Paris is being exposed by Garo Sero Research Institute. We will work even harder to clear actress Kim Sae-ron’s name. Park Seo-joon, fighting!
Netizen Reactions and Kim Sae-ron’s Legal Developments
Despite Garo Sero’s claims, some netizens have dismissed the speculation. They argue that Park Seo-joon’s caption simply refers to the horizontal orientation of his photos and has no hidden message directed at Kim Soo-hyun.
Meanwhile, on the same day, the legal representative of the late Kim Sae-ron’s family, the law firm Buyu, held a press conference at the Seoul Metropolitan Police Agency. Attorney Bu Ji-seok announced that they had filed a defamation lawsuit against YouTuber Lee Jin-ho for allegedly spreading false information.
Attorney Bu Ji-seok also mentioned a text message sent by the late Kim Sae-ron to Kim Soo-hyun after his agency’s initial legal notice.
After Kim Soo-hyun’s agency sent the first legal notice, the late Kim Sae-ron texted Kim Soo-hyun, pleading for help. However, he did not respond. Instead, his agency sent a second legal notice.
This ongoing situation has created division among fans, with some defending the actors involved and others questioning the true nature of the relationship between Park Seo-joon and Kim Soo-hyun.
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