Haechan is featured in Mark's solo single comeback, my heart is touched by the legend

It's amazing! I don't know how you can't love the Mark and Haechan combination... Mark has a secretly acoustic musical style, and Haechan's vocal tone goes so well with the two. My anticipation is exploding. As soon as I heard the news of Haechan's featuring, I replayed the old Goodbye Summer cover video while it was still cool. Oh, sweet featuring, come on