As you might have guessed, Suyi and the others, minus Shinwoo, were shocked at the sudden proposal. Suyi started to sputter some type of excuse when Shinwoo came to her rescue. He walked up to the other man smiling and punched him upside his head. The man fell down face first and Shinwoo said, still smiling, "Remember Kun-woo, you promised not to do anything weird and to behave. If you don't stay true to your promise, then I'm not responsible to what happens to you." Shinwoo continued smiling, but his eyes held the promise of ultimate pain if he doesn't do as he is told. The man, Kun-woo, grumbled something and shook his head obediently.
Shinwoo's smile turned genuine and he turned to the others and said "Let's go back inside. I'll explain who he is then." And with that Shinwoo walked back into the house with the man trailing behind. The others stood outside for a while before Ik-han ran back inside the house to learn more about the strange man. After a few doubting seconds the others followed inside and walked back into the living room. When they got in there, Kun-woo was sitting on the couch, Shinwoo sitting on the man's lap and Ik-han trying to get them to tell him who the strange man was. Frankenstein cleared his throat and everyone turned towards him. He put on his usual 'good host' smile and calmly asked, "Can you please explain who this man is, Shinwoo? I pretty sure we are all curious to know his identity."
Shinwoo and the man glanced at each other before Shinwoo moved off of his his lap and the man cleared his throat and crossed his legs, he actually looked kind of professional, and gestured for everyone to sit down. The others complied and waited for him to start. After a quick glance at Shinwoo and a tight hand squeeze he finally spoke. "Hello my name is Han Kun-woo and I am Shinwoo's older brother."