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On the Christmas Eve broadcast of SBS Power FM's 'Cultwo Show,' he was asked everyone's favorite question, "What is your ideal type?"  Seo In Guk shared, "I like pure and innocent women... I once mentioned Han Ga In as my ideal type. She is still my ideal type."

When asked, "Is there a female celebrity who you think is really pretty?", Seo In Guk chose YoonA and explained, "YoonA is really pretty. I also think actress Son Eun Seo is pretty. They are all pretty but I end up only being friends with them. They are so pretty that it's burdensome."

He also shared, "I was invited to Girls' Generation's year-end concert by Yuri whom I became friends with through our movie 'No Breathing'... I wanted to go to Girls' Generation's concert, but I had a scheduling conflict. When I watched the videos from the concert the next day, it seemed like they prepared a lot for the stage. I am stomping the ground with regret because I couldn't go."

Do you think YoonA's beauty is burdensome?