You wrote a letter to Luhan, saying:
"Luhan oppa, by the time you see this I would be gone. Don't look for me anymore. I'm sorry to hurt you like this but blood is thicker than water. Treasure your parents. The past 1 year was the best 1 year of my life. Oppa, I'm leaving all our memories behind. I hope you'll do the same and move on. All the best Luhan oppa!" placing the letter beside the box, you left for Hokkaido before EXO finds out.
When Luhan returned, you've left for a week already. Using the key he has, Luhan let himself into your house. He discovered the box and letter left behind. After reading the letter he clutched it close to him. As Luhan looked through the things, he discovered the necklace. Luhan was determined to find you and persuade his parents to give both of you their blessings. However being an EXO member, SM does not allow Luhan to actively search for you. hence, he hired a private detective to look for you.
