Singer Kim Hyun Joong held a live concert at the Yokohama Arena on February 5th to celebrate his Japanese debut. At the concert hall, Kim Hyun Joong faced the 20,000+ audience members and remarked, “My Japanese debut song, “Lucky Guy“, has sold over 100,000 copies in the first week after its release. Thank you guys for showing me so much support, even though I’m just a rookie here.” Read more on Allkpop.