Having left for Japan on August 16th for�JYP Nation's first Japanese concert, 'JYP Nation in Japan', the JYP Nation members managed to tweet a series of photos amidst their busy rehearsals. On August 16th, 2AM's Jo Kwon tweeted, "IN JAPAN", and added, "We are working hard for the rehearsals". In the photo shown above, he's seen smiling brightly for the camera with�miss A's Suzy, while in the photo below, various members pose cutely for the camera (especially San E), showing that they seem to be enjoying themselves despite their busy schedules this week. Wonder Girls' Ye Eun also shared a photo with the comment, "In the middle of rehearsing", and 2AM's Seulong tweeted the amusing (albeit rather lonely) photo below saying, "Ong who is drinking a beverage by himself outside the waiting room.."

And finally, 2PM's Nichkhun tweeted, "Let it begin!!!! =]", with a picture that reads, "JYP NATION IN JAPAN 2011".

Fans responded to the photos with comments like, "JYP Nation daebak!", "You're all so cute!", and�"JYP Nation is the best!" Check out the rest of their photos from Japan below! [gallery] Source + Photos: Jo Kwon, Ye Eun, Seulong's Twitters