Sexy Voice & Robo Vol.1-Vol.2

Sexy Voice and Robo is a seinen manga by Iou Kuroda. It was originally serialized in the semi-alternative manga magazine Ikki between 2000 and 2003, and has also been published worldwide, including in North America by Viz Media and Spain by Ponent Mon. In 2007, it was adapted into a live action Japanese television drama, which aired every Tuesday on Nippon Television between April and June 2007, spanning a total of 11 episodes.The manga won an Excellence Prize at the 2002 Japan Media Arts Festival, and has received critical acclaim around the world.
The story is about the adventures of a 14 year old girl named Nico Hayashiwho uses her talents of changing and altering her voice to manipulate men over the phone who want to participate in Enjo kosai. Through this she learns a lot about human nature, and gains a keen understanding of people through their voices. An aging gangster notices her talents and decides to hire her to solve various cases.