...MeruPuri.

Haven't seen any reviews of this one yet, but I'll keep you posted. A technorati search turns up a little chatter.

Sexy Voice and Robo is out at long last!! (English Adaptation by Yours Truly.)

Anime on DVD Manga Forum thread here.

From Publishers Weekly

Starred Review. This is a fun, unusual manga in the vein of television shows like Veronica Mars. Nico Hayashi is a 14-year-old girl who masquerades as a dating service/phone sex operator just for the anthropological fun of it. She winds up getting embroiled in a scheme working for a kindly, aging gangster to find a kidnapped boy. After her initial success, the gangster keeps her on as an investigator on cases ranging from mysterious telephone pranks to strange soccer shenanigans. Along the way, Nico picks up an older, nerdy man—dubbed Robo for his love of robot action figures—and he becomes both a somewhat grouchy sidekick and comic foil. The 13 excellent short stories stand alone but also contain ongoing themes and subplots. Kuroda writes funny, convincing dialogue to complement his suspenseful, mystery-of-the-week yarns. Working in a naturalist style, with broad brush strokes and evocative backgrounds and layouts, Kuroda is clearly influenced by such American indie cartoonists as Paul Pope and Gilbert Hernandez. Nico is an engaging protagonist, making this a rare comic that offers as much to older teens as to adults. (July)
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Introduction by Chris Beveridge:

Sensual Phrase was an interesting title right from the moment it got licensed. I had never heard of it before but a couple of rather fangirlish friends of mine practically squealed when this news came out and that certainly caught my attention. While our tastes don't mix a lot, there are some areas where they do and I figured this was worth checking out. And over the first four or five volumes, I rather enjoyed the over the top whirlwind romance between two teenagers, one of whom happened to be the lead singer for a popular band called Lucifer. The visuals were striking, I loved the designs and even though translation I enjoyed the raunchy lyrics that didn't hold back. It was extremely easy to mentally hear Andrew Eldritch's voice from the Sisters Of Mercy. Sensual Phrase became what was truly a guilty pleasure book.

More in link.

See also, associated forum thread.

Viz's SENSUAL PHRASE page is here. Buy it through this link and I get some kind of kickback. Theoretically.