You were the fan that sent Yun-Jin her Christmas sweater. One day, you received some mail. You looked through the mail and saw a small package. You opened the package. There was a letter inside.

Dear Fan,

Thank you for the sweater you sent. It honestly was the best gift I ever gotten from a fan. Well…enjoy the gifts I sent you.

Sincerely, Magnum Opus

You look in the package for these “gifts”. It was a ticket to the next Ji-Woon Hak concert along with a backstage pass.