Spoilers free. In short: don't read this manga. It's horrible.
Why? I keep asking myself that too! Why does it exist? The famous art style doesn't help the situation. With Nakamura Asumiko's name you read the manga expecting good things to happen but they don't. Instead, silly and unreasonable things keep piling up.
What to expect from this manga: good art style, unreasonable characters and ridiculous situations, whoring shown in a good light, pedophilia shown in a good light, suicide taken lightly, stupid things said about the holocaust. A bit too much for only six chapters... But it was supposed to be all serious and dramatic and
deep, eh, Nakamura Asumiko-san? It was published as a prequel to J no Subete three years after JnS was. Makes you think...