As most criminals seem to do nowadays, he decided to write a book about what he did and why he did it.
Here's an excerpt:
The naked body of 22-year-old Lindsay Hawker was found stuffed in a sand-filled bathtub at Ichihashi's Chiba apartment after he fled the scene. She had been reported missing by her roommates and the Nova language school where she worked. Police had suspected Ichihashi after Hawker's roommates said he had been stalking the Briton, pressing for her to teach him English.
Ichihashi has told investigators that he taped Hawker's mouth and tied her up in his apartment.
What a great guy, eh?