Series: Shugo Chara!
Episode Number: 43
English Title: Character Transformation! Amulet Dia!
Romanji Title: Kyara Nari! Amyuretto Daiya!
Kanji Title: キャラなり! アミュレットダイヤ!
Airdate: August 02, 2008
Directed by: Masaru Yasukawa
Written by: Ryunosuke Kingetsu
Preceeded by: Episode 042: Utau Hoshina! The Last Fight!
Followed by: Episode 044: Twinkle of the Heart!
Amu character transforms with Dia, with the X removed, and becomes Amulet Dia. Ami arrives unexpectedly and asks Utau to sing. Though hesitant at first, she soon finds the song that she had kept inside of her heart. The X-Eggs then hatch into X-Characters, and the heroes are all forced battle them, eventually succeed. The remaining X-Characters cause the helicopter to go out of control. Wishing to save her manager, Utau Character Transforms with El, becoming Seraphic Charm. Amu and Utau fly up to where the helicopter is, and Utau purifies the X-Characters. Yukari falls from the helicopter, and Utau goes after her to save her. Amu uses Starlight Navigation to calm down the helicopter and land it safely. In the mix of the purified eggs, the shining egg shows up again. It's shaped like an oval and is rainbow-colored. It's seen roaming around aimlessly, but after a while, it flies off into the sky, with Ikuto shocked. In the end, Dia reverts back into her egg again until the next time Amu "shines" again.
- First appearances of Dia's true form; Character Transformations Amulet Dia and Seraphic Charm; and the attacks "Starlight Navigation", "Holy Crown Special", "Angel Cradle" and "Tightrope Dancer".
- This episode is based on chapter 26 of the manga.
- Ami's unexpected arrival was never explained in this episode. However, in the manga, she says that she was taken to them by a long-haired man when she got lost while trying to follow her sister.