The secret behind the Black Diamond CD is revealed and Kairi is conflicted about his sister's plans. Il becomes frustrated because Utau has been ignoring her recently. Meanwhile, the Guardians come to the realization that Kairi was an Easter spy. When Nikaidou gives the Guardians tickets to a special concert, the Guardians go to confront Kairi. As they arrive, they find Utau extracting X Eggs from the gathered crowd. Ikuto pulls Utau away and Kairi blocks the Guardians from chasing them. However, the X Eggs goes wild and form a blob. During the battle, Yaya Character Transforms into Dear Baby for the first time. Amu helps Kairi to remember his true self and Kairi Character Transforms into Samurai Soul. Together, they purify all of the X Eggs. After the battle, Tadase sees the sparkling egg again and Kairi informs the Guardians about Black Diamond's mainstream debut.
Kanae Itou
Amu Hinamori (voice)
Kana Asumi
Ran (voice)
Nanae Kato
Miki (voice)
Aki Toyosaki
Su (voice)
Reiko Takagi
Tadase Hotori (voice)
Kaya Miyake
Kiseki (voice)
Yuichi Nakamura
Ikuto Tsukiyomi (voice)
Miyuki Sawashiro
Yoru (voice)
Nana Mizuki
Utau Hoshina (voice)
Yokote Kumiko
El (voice)
Hiromi Konno
Il (voice)
Saeko Chiba
Nadeshiko Fujisaki (voice)
Ryoka Yuzuki
Temari (voice)
Atsushi Abe
Kūkai Sōma (voice)
Tomoko Nakamura
Yaya Yuiki (voice)
Hiroyuki Yoshino
Daichi (voice)
Sayuri Yahagi
Rima Mashiro (voice)
Sayaka Narita
Kusu Kusu (voice)
Mitsuki Saiga
Kairi Sanjou (voice)
Nobuhiko Okamoto
Musashi (voice)
Junji Majima
Yū Nikaido (voice)
Kimiko Koyama
Pepe (voice)
Rio Natsuki
Yukari Sanjō (voice)
Eri Nakao
Hikaru Ichinomiya
