As in the previous post on the Birthdays in Japan, there are other parts in the History in Japan Volume 2 DVD. I think that this is the complete version of the DVD both discs included. But I'm not absolutely sure You can stream and watch the videos and download them using VEOH. However, this is merely for preview purposes. DO buy your own original copy of the DVD to support DBSK! Happy viewing!
History In Japan Vol. 2
(This is roughly the whole video of the previous parts 1-3 that I posted plus slightly more at the end.)
credits: mei_yee_chan @ cyxion