Juunikyuu de Tsukamaete

Japanese Title: 十二宮でつかまえて

English Title: Zodiac P.I.

Chinese Title: 占星妙探

Plot
13-year-old Lili Hoshizawa uses horoscopes and astrology to solve crimes, accompanied and assisted by her childhood friend, Hiromi, after he returns from ten years spent in America for college. Lili uses the Star Ring to tell fortunes and, at times, to transform into the disguise of "Detective Spica", in which no one recognizes her, except Hiro (such transformations are a common staple of Magical Girl manga). The ring was left to Lili by her mother, who used it previously to transform into Detective Spica; one of Lili's long-term goals is to discover what happened to her missing mother. Using this ring, Lili has to try to solve many cases including the first published one, about Chihiro, a murdered girl in her class.

Her other cases take her around to different places from a piano school, to a fortune telling TV studio, to a wedding. She solves cases with Hiromi's help.

To solve crimes, she will figure out the birth date of the victims and then their signs such as Leo, Virgo, etc. Next, using the power of the ring, she will call upon the spirit of that person's sign. Then she'll ask for the horoscope of the victim on a specific date that is connected to the crime. Along with the horoscope, the spirit will give her a clue so she can solve the crime.