Worst of Grangé

A great lover of Grangé novels, I was disappointed with this album that tightens the usual ingredients but with much less talent and more sloppy.
All situations are improbable and history of the serial killer, uninteresting and quickly closed, is only a pretext to present the customs and traditions of Japan, truthful or extrapolated. It is so present that it becomes cumbersome.
The plot boils down to an unlikely and not credible revenge between two women (in the way "Stone Council").
In short, what I remember is an original and unexpected description of a fantasized Japan.