Happy belated birthday to Seo In Guk who is currently working hard to promote his upcoming movie 'No Breathing.' He tweeted earlier today, "My birthday was yesterday and I was shy from the congratulations. Thank you, company family members, for wishing me a happy birthday," and uploaded the above picture. In the picture, Seo In Guk is hiding his face in his hands because he feels happy and shy from seeing his fully lit up birthday cake. He looks like an adorable, full-grown kid with this pose, especially as he is wearing a birthday hat. Again, happy belated birthday, Seo In Guk!