Love Ritual will put you in the shoes of a woman named Riilai, a professional scientist with extensive knowledge on occult magic. In a big case, the police reach out to her family in order to investigate whether or not a ritual took place at the crime scene. Riilai goes to the city to assist on the investigation as an expert in the hopes of getting a lead to the suspect.

Riilai will have to face the two advocates for the two primary suspects, and her relationships will start to change!