Seo In Guk gets honest about his thoughts with his "Pipeline" co-stars Lee Soo Hyuk and Yoo Seung Mok.

In a recent interview by YTN star, the 33-year-old actor recalled his experience while shooting for the action crime movie.

He shared that there are a lot of "physically and mentally difficult parts"; however, he also enjoyed working on the set because he had a good time with his fellow actors.

In addition, the singer-actor who "worked really hard on filming" mentioned that it all paid off during the debut of "Pipeline."

"It feels like the hardship I had at that time is being compensated for by the release of the movie. It feels really good."

IN CASE YOU MISSED IT: Seo In Guk Graces Marie Claire's June Issue + Details Experience on 'Doom at Your Service' and Upcoming Movie 'Pipeline'

"Pipeline" Cast and Details

The recently released movie premiered last May 26 was helmed by "Gangnam 1970" director Yoo Ha alongside screenwriter Kim Kyung Chan.

It follows the story of six oilers who plan on carrying out a heist into the biggest pipeline of South Korea known as the "artery" with hopes of stealing hundreds of billions of dollars of oil buried under the ground.

In the movie, Seo in Guk portrays Pin Dol Yi, a skilled drilling technician who works alongside fellow gang members Gun Woo, played by Lee Soo Hyuk, the wealthy mastermind, and Jeop Sae, also known as "New bird" portrayed by Eum Moon Suk.

Moreover, Yoo Seung Mok plays the underground geography expert known as Section chief Na while Tae Hang Ho and Bae Da Bin portray Geun Sab a.k.a "Big shovel" and "Counter."

Seo In Guk Admits Being "Scared" of Veteran Actor Yoo Seung Mok

As his interview with the South Korea outlet continues, the 33-year-old heartthrob spoke about his first impression with the "Pipeline" cast.

Seo In Guk was thankful to be around senior actors, especially Yoo Seung Mok; however, he revealed that he was scared of the "Taxi Driver" actor, maybe because of his previous roles in the dramas.

However, it turns out that the veteran actor was funny and "friendly" on set and even compared him to his character, manager Na.

"In reality, he was very similar to the manager Na in 'Pipeline'. He's humorous and friendly. You have been," he explained.

Seo In Guk Spoke on His Working Relationship with Lee Soo Hyuk

On the other hand, Seo In Guk also spoke about his experience working with Lee Soo Hyuk, who is also his co-star in the hit fantasy drama "Doom at Your Service."

During the interview, the "Shopping King Louie" star mentioned that he gets to know more about the 32-year-old actor every time they both starred in the same project and appears to understand what each other thinks just by looking at them.

"I thought it was really fun and good to have an actor who shoots often," he added.

Aside from the two projects, Seo In Guk and Lee Soo Hyuk have also co-starred in the 2014 tvN drama "High School King of Savvy."

READ MORE: Seo In Guk and Lee Soo Hyuk's Forthcoming Film 'Pipeline' Reveals First Trailer

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Written by Geca Wills