Zodiac P.I.

Zodiac P.I. (十二宮でつかまえて, Jūnikyū de Tsukamaete) is a manga series written and illustrated by Natsumi Ando. Appearing as a serial in the monthly shōjo manga magazine Nakayoshi from the April 2001 issue to the January 2003 issue, the chapters were compiled into four bound volumes by Kodansha and published from November 2001 to March 2003.

Plot
Set in modern-day Japan, the series centers on 13-year-old extrovert Lili Hoshizawa, who uses astrology to solve crimes, and manages her missing mother's fortune-telling business on the side. Her childhood friend, Hiromi Oikawa, assists her, after he returns from the United States, where he studied criminal psychology. As Detective Spica, Lili uses the magical star ring, left to her by her missing mother, to aid her in solving crimes by consulting with one of the twelve astral spirits in the ring and learning the victim's horoscope. Her father, Inspector Hoshizawa, disapproves of her actions. Periodically, she encounters rival private investigator Sirius, who tests her mystery-solving skills.

While solving cases, Lili eventually learns from Hiromi's elder sister, Megumi Oikawa, that Hiromi's allergy to girls resulted from her: ten years ago, he waited in the rain for Lili to show after he left her a love letter. Lili encounters Zeus, a fortuneteller and hypnotist who kidnaps her father. After Hiromi rescues him, Zeus takes Hiromi captive and demands the star ring in exchange. Realizing that Sirius is her missing mother, Lili frees her from Zeus's hypnosis. Lili learns that her mother disappeared to protect her family from Zeus, who hates Sirius, as he believes that she kidnapped his girlfriend and caused her to become comatose. Lili uncovers the truth: his girlfriend feared that he desired the star ring more than her love and asked Sirius to stage a kidnapping and have him decide between her or the star ring. When he hesitated, she was devastated and threw herself off the cliff. After learning this, Zeus loses his desire for the star ring and lets Lili, Hiromi, and Lili's mother leave. Lili accepts Hiromi's love for her. In the conclusion, Lili's mother takes over her fortune-telling business, and Lili continues to solve crimes with Hiromi's assistance.