Shinichiro Watanabe is as close to a cult anime director as you get and with Kids on the Slope he addresses directly the stylistic thread that runs through everything he does, music.
Kaoru Nishimi is the buttoned down, classically trained protagonist, carrying his emotions bundled up in his suitcase through an endless carousel of schools and communities. Never having time for friends or even acquaintances, and drawing his only pleasure from the structured performance of classical piano. The series begins with the door to his sheltered existence creaked open by the self-styled drummer Sentaro Kawabuchi. In a cacophony of fists, romance, and blaring jazz, Sentaro awakens Kaoru to the wonders of expression.
Shinichiro Watanabe, along with composer Yoko Kanno, has sketched a nostalgic portrait of 60s Japan, and in what i'm sure are touches of autobiography shown an adrift young man find a home in the beautifully flawed world of jazz. Watanabe draws his characters with a loving hand, appreciating nuance and weakness as part and parcel, however this adoration can sometimes come across as sentimentally watery. But the show is made with a joy that leaps out from every vivid image and roaring musical number, that would suppress any criticism in sheer enthusiasm.
Drawing from the American Beatniks and his own experience Watanabe produces a delicate character play enriched by one of the finer soundtracks i've heard.