Seo In Gook's 90 degrees greeting recently attracted attention.

On the 21st, Seo In Gook celebrated his birthday during a fan meeting.

For a special stage, he sang the duet song 'All For You' with people who had special stories.

Seo In Gook was seen bowing 90 degrees towards a fan that was leaving the stage. Pictures were revealed and gained attention.

While he was filming for dramas, he was also seen greeting people all the time. Netizens commented, "he is a guy with great manners."

Meanwhile, Seo In Gook appears in the MBC weekend drama 'Rascal Sons.'