収録内容
[Disc 1]
1.
Beautiful X
/ X21
2.
ﾏｼﾞｶﾙ☆ｷｽ
/ X21
3.
絶対ﾋﾛｲﾝ
/ X21
4.
夏だよ!!
/ X21
5.
ｶﾗﾌﾙしましょ
/ X21
6.
どこまでｱﾘ? どこからﾅｼ?
/ X21
7.
every time, every where
/ X21
8.
約束の丘
/ X21
9.
鏡の中のﾊﾟﾗﾚﾙｶﾞｰﾙ
/ X21
10.
YOU-kIのﾊﾟﾚｰﾄﾞ
/ X21
11.
Who is X!? (Long Version)
/ X21
12.
笑顔のﾌﾟﾛﾛｰｸﾞ
/ X21
[Disc 2]
1.
Beautiful X (MUSIC VIDEO)
/ X21
2.
YOU-kIのﾊﾟﾚｰﾄﾞ (MUSIC VIDEO)
/ X21
3.
ﾏｼﾞｶﾙ☆ｷｽ (MUSIC VIDEO)
/ X21
4.
約束の丘 (MUSIC VIDEO)
/ X21
5.
夏だよ!! (MUSIC VIDEO)
/ X21
6.
鏡の中のﾊﾟﾗﾚﾙｶﾞｰﾙ (MUSIC VIDEO)
/ X21
7.
Beautiful X (MUSIC VIDEO ｵﾌｼｮｯﾄ)
8.
少女X (【2015.9.26 2nd PREMIUM LIVE at Zepp DiverCity TOKYO】BEST SELECTION)
9.
ｴｲｴﾝ×ｾﾂﾅ (【2015.9.26 2nd PREMIUM LIVE at Zepp DiverCity TOKYO】BEST SELECTION)
10.
恋する夏! (【2015.9.26 2nd PREMIUM LIVE at Zepp DiverCity TOKYO】BEST SELECTION)
11.
Xｷﾞﾌﾄ (【2015.9.26 2nd PREMIUM LIVE at Zepp DiverCity TOKYO】BEST SELECTION)
12.
ﾂﾗくないよ (【2015.9.26 2nd PREMIUM LIVE at Zepp DiverCity TOKYO】BEST SELECTION)
13.
ﾏﾃﾘｱﾙｶﾞｰﾙ (【2015.9.26 2nd PREMIUM LIVE at Zepp DiverCity TOKYO】BEST SELECTION)
14.
あなたのとなり (【2015.9.26 2nd PREMIUM LIVE at Zepp DiverCity TOKYO】BEST SELECTION)
15.
席替えｳｲﾝｸ (【2015.9.26 2nd PREMIUM LIVE at Zepp DiverCity TOKYO】BEST SELECTION)
16.
心配ｴﾌﾞﾘﾃﾞｨ (【2015.9.26 2nd PREMIUM LIVE at Zepp DiverCity TOKYO】BEST SELECTION)
17.
ﾜｸﾜｸ☆WALKIN’ (【2015.9.26 2nd PREMIUM LIVE at Zepp DiverCity TOKYO】BEST SELECTION)
18.
明日への卒業 (【2015.9.26 2nd PREMIUM LIVE at Zepp DiverCity TOKYO】BEST SELECTION)
19.
ﾊｯﾋﾟｰｱﾌﾟﾘ (【2015.9.26 2nd PREMIUM LIVE at Zepp DiverCity TOKYO】BEST SELECTION)
20.
YOU-kIのﾊﾟﾚｰﾄﾞ (【2015.9.26 2nd PREMIUM LIVE at Zepp DiverCity TOKYO】BEST SELECTION)
/ X21
21.
Best Friend (【2015.9.26 2nd PREMIUM LIVE at Zepp DiverCity TOKYO】BEST SELECTION)
22.
ﾁｬｲﾑ鳴ったら... (【2015.9.26 2nd PREMIUM LIVE at Zepp DiverCity TOKYO】BEST SELECTION)
