Stand By U tracklist from official website:
Jacket A
-CD-
Stand by U
Tea for Two
Stand by U (Less Vocal)
Tea for Two (Less Vocal)
-DVD-
Stand by U (Video Clip)
Off Shot Movie
Jacket B
-CD-
Stand by U
Tea for Two
Sky （Bonus Track）
Stand by U ～Luv Behind The MLD mix～
Stand by U (Less Vocal)
Tea for Two(Less Vocal)
http://toho-jp.net/discography/index.html
I guess there will only be one PV. Can't wait to listen to the Stand by U remix.