In the beginning of the story, a man who have been harassing his ex-wife was first injured by his own daughter. He fought back and the girl's mother kill this man in self-defense.
The story go really weird real fast.
The next door neighbor knew that they are in trouble and offered to dispose the body for them.
They should have gone to the police.
The rest is how the neighbor, who is a math teacher and a friend of a person nickname detective Galileo got involved in this case.
I found it strange that the first killing is unintentional. Yet the cover up is so stupid. Just dispose of the body and cover up any evidence would do. Why be so elaborate in trying to outsmart the police when the police is a bit clueless in what's going on.
The last bit is even worst. I like it as it does reflect on the Japanese culture of accepting responsibilities and the duty to confess one's wrong.
The bad thing is, who care? If it is self defense, trust the system to prove that it is intentional manslaughter.
Reading this for Diverse Voices.