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On the first episode of 'Roommate' the rookie actor's actual dorm life will be shown before he enters the 'share house' with the other celebrity cast. It turns out he's currently living in cramped conditions in a small dorm with 7 people, including the members of his actor-idol group 5urprise. 

The members were also seen eating ramen, but wishing they could go out for some meat. In addition, Seo Kang Jun shares his wish for wanting to sleep on a bed as he and his members have no choice but to sleep crowded on the floor.

After entering the 'share house' for the new variety show, it's said he surprised his new roommates on their way to get groceries. Shin Sung Woo asked Seo Kang Jun to look up nearby markets on his phone, but Seo Kang Jun replied, "I use a 2G cellphone so I can't look it up," which surprised the others since it's rare to come across someone, especially of Seo Kang Jun's age and celebrity status, to be without a smartphone in Korea.

'Roommate' will premiere on May 4 at 4:20 PM KST!