A middle school girl who time-slipped from the year 2027 to Makoto-Mirai City in 1999. Her catchphrase is "Hanamaru!" (Gold Star!) and she solves cases at the Cure-at Detective Agency. First person: I (energetic). She has sharp intuition and is the type to act immediately once she sets her mind to something. She has a very positive and bright personality.

A resident of 1999. A middle school girl the same age as Anna. She met Anna while on her way to the Cure-at Detective Agency to become a great detective, and the two ended up working together. She mainly solves cases using her intellect. First person: I (polite). She has a bright personality similar to Anna's.

Formerly a member of the Phantom Thieves, but after various events, she ended up working as a detective with Anna and the others at the agency. She actually cares deeply for Cure Eclair, so she seems eager about this investigation. First person: I (reserved). She is a lovable ice cream addict who is a regular at Claire's shop. Despite her appearance, she is a high school student. She is mysterious but quietly rejoices whenever ice cream is involved.

One of the candidates for Cure Eclair. A high school girl working at Patisserie Chouchou. She is the one who serves macarons and other sweets to Anna and the others. She sees Ruruka as a regular customer. She loves eclairs. She is actually Cure Eclair herself, but she keeps it a secret.

A 17-year-old genius mystery novelist with a ditzy personality. Surprisingly, her intuitive abilities are excellent. She investigates by taking on the appearance of others, though her transformation abilities are inferior to Nijy's. However, once Eliza gets into character, there's no stopping her! She occasionally drops by the detective agency. She is incredibly bright and a bit of an airhead.

A middle school girl and the student council president of the school Anna and the others attend in Makoto-Mirai City. She is a person of strong conviction, serious but passionate. She views Anna and the others as good juniors.

A 16-year-old girl who is a rising star actor of the Heisei era! She possesses an adult-like maturity befitting an actor, but occasionally shows her true age. she has a mysterious "Shiruku Exercise" and seems desperate to have Anna and the others dance it with her.

A Precure shrouded in mystery. Or so it was thought, but she's actually a big-sister figure who eats eclairs often and loves Ruruka way too much. Her love for eclairs is the hint!

A genius inventor. Although he looks like a young boy, he claims to be over 200 years old. He supports Anna and the others with Pre-Kits.