Cases from the Desk of Harrie Noire

Sixteen year old Tabitha Quaile, a sophomore at a private girls' school, teams up with twenty-six year old Harrie Noire, a quirky private investigator, to solve mysteries.

The first case, The Incident at Liliwen Lyceum serves to see the two protagonists join forces for the first time to solve the case of a destroyed racing shell. Envisioned as a serial where Tabitha and Harrie solve a new case with each story, there is currently only this first case. 

This visual novel is classified under the "yuri" tag. You should expect moderate flirting and romantic happenings despite the focus being on the investigation rather than romance.