From “Tropical-Rouge! Pretty Cure: The Snow Princess and the Miraculous Ring!”, the teaser movie featured “Heart Catch Pretty Cure!”, with upcoming collaboration, titled “with Heart Catch Pretty Cure! Ver.” was released together with new scene cuts.

The voice actress and artist Mizuki Nana reported the birth of her first child through her blog on March 16, 2021. In addition, "When I held my baby in my arms for the first time, I was moved to tears and realized that this is what it means to thinking the sun shines out of someone's eyes! (laughs)" she wrote. Mizuki announced her marriage to a musician on July 7, 2020, and her first pregnancy on November 6, 2020. Then, on March 16, 2021, she updated her blog with the title "To everyone who has always supported me" and wrote, "I am reporting that I gave birth to my first child safely the other day. I was very nervous as I gave birth earlier than expected , but both my baby and I are healthy and doing well," she reported the birth of her first child. She continued, "When I held my baby in my arms for the first time, I was moved to tears, and I realized that this is what it means to think the sun shines out of someone's eyes! (laughs) I am filled with gratitude to my family and all the staff who have supported me up to this point, and to all the fans who have watched over me.” Finally, she said, "I'm going to start struggling as a mother, but I'm going to take good care of my body and do my best in my work as well. Thank you for your continuous support and watching over me!” Mizuki will be playing as Tamao Tamamura from "SHAMAN KING" and Tadano Shino from "Uramichi Oniisan" in the future.