One day, Mana Aida receives a wedding dress from her mother and grandmother that they had worn in the past. While thinking about who she would wear this beside someday, a mysterious man named Marsh appears, and Mana is thrown back into the past. She was happy to see her grandmother she loved and her old dog Maro, but she then realizes that Alice and Rikka aren't there because memories have been altered. In order to save precious memories, the future, dreams and hope, Mana transforms into Cure Heart.
| Writing | Ken Ueno | Characters |
| Production | yasuhiko nukaga | Production Manager |
| Writing | Ryota Yamaguchi | Screenplay |
| Directing | Naoyuki Ito | Director |
| Visual Effects | Ken Ueno | Animation Director |
| Visual Effects | Tomoko Kohioki | Color Designer |
| Art | Takashi Kurahashi | Art Direction |
| Art | Yoshitoshi Shinomiya | Background Designer |
| Visual Effects | Mitsuru Aoyama | Key Animation |
| Visual Effects | Yoshitaka Yashima | Key Animation |
| Visual Effects | Hitoshi Inaba | Key Animation |
| Visual Effects | Yuichi Hamano | Key Animation |
| Visual Effects | Nobuto Akada | Key Animation |
| Visual Effects | Kenji Mima | Key Animation |
| Visual Effects | Yukihiro Kitano | Key Animation |
| Visual Effects | Hitomi Matsuura | Key Animation |
| Visual Effects | Tadashi Shida | Key Animation |
| Visual Effects | Mamiko Nakanishi | Key Animation |
| Visual Effects | Noriyoshi Yamazaki | Key Animation |
| Visual Effects | Takeshi Morita | Key Animation |
| Visual Effects | Nishiki Itaoka | Key Animation |
| Visual Effects | Seiji Masuda | Key Animation |
| Visual Effects | Aya Nagumo | Key Animation |
| Visual Effects | Satoshi Mutsuda | Key Animation |
| Visual Effects | Takayuki Sano | Key Animation |
| Visual Effects | Seishirou Nagaya | Key Animation |
| Visual Effects | Kazuaki Inaguma | Key Animation |
| Visual Effects | Ayumi Kurokawa | Key Animation |
| Visual Effects | Takafumi Hino | Key Animation |
| Visual Effects | Tomoko Tsuji | Key Animation |
| Visual Effects | Junko Nakamura | Key Animation |
| Visual Effects | Yuji Miyashita | Key Animation |
| Visual Effects | Koji Watanabe | Key Animation |
| Visual Effects | Satoru Nakamura | Key Animation |
| Visual Effects | Yukiko Akiyama | Key Animation |
| Visual Effects | Naotoshi Shida | Key Animation |
| Visual Effects | Michiko Notsu | Key Animation |
| Visual Effects | Maiko Fujiwara | Key Animation |
| Visual Effects | Nozomu Kuwashima | Key Animation |
| Visual Effects | Kae Anzai | Key Animation |
| Visual Effects | Aya Nasuno | Key Animation |
| Visual Effects | Sansai Onogi | Key Animation |
| Visual Effects | Yoko Sugita | Key Animation |
| Visual Effects | Yoko Suzuka | Key Animation |
| Visual Effects | Manabu Nii | Key Animation |
| Visual Effects | Hiroshi Kohara | Key Animation |
| Visual Effects | Hiromi Minamibayashi | Key Animation |
| Visual Effects | Hayato Torii | Key Animation |
| Visual Effects | Naoko Koyama | Key Animation |
| Visual Effects | Hiroyuki Takeuchi | Key Animation |
| Visual Effects | Akihiro Ota | Key Animation |
| Visual Effects | Yoshie Kimoto | Key Animation |
| Visual Effects | Chiori Matsuda | Key Animation |
| Visual Effects | Miyako Kitada | Key Animation |
| Visual Effects | Yasuko Fukumoto | Key Animation |
| Visual Effects | Yukiko Ueda | Key Animation |
| Visual Effects | Ken'ichi Hirata | Key Animation |
| Visual Effects | Yuki Fukuzawa | Key Animation |
| Visual Effects | Koji Furuya | Key Animation |
| Visual Effects | Fumiko Kikuta | Key Animation |
