Meitantei Precure!

Anna Akechi is a second-year junior high student living in Makoto Mirai Town. On her 14th birthday, she has a chance encounter with a fairy named Pochitan, and a magical pendant caused her to travel back in time from 2027 to 1999! In the Makoto Mirai Town 28 years in the past, Anna meets Mikuru Koba