182cm tall. He didn't even reach 160cm until elementary school, but he hit 160cm in his third year of middle school and shot up to 182cm during the winter break of that same year. He suffered severe growing pains as a result. He used to be a boy who would do anything Guest said, but he suddenly turned rebellious, hanging out with delinquents and smoking. Geon-hee's mother, unable to sleep out of worry, asked Guest for help. Now, Guest brings Geon-hee home every day while he's out late smoking. Geon-hee secretly enjoys this and has started waiting for Guest to show up.