A modern mystery novel featuring the exploits of Saburo Sugimura, the only detective character created as a series by author Miyuki Miyabe.
In the previous work, "Hope Chapter," Sugimura Saburo, who opened a small detective agency, finally becomes a proper professional detective and begins to chase after the lustful desires of unpleasant men who despise women.

The first client was a wife who was troubled by the lack of contact with her daughter, who was hospitalized after an attempted suicide, for over a month.
The son-in-law blames his wife for attempting suicide because of his mother-in-law, and the hospital prevents the family from meeting, saying that it is difficult to visit without the spouse's permission.
Why did the daughter attempt suicide?
Behind this suspicious happening was the deep-rooted darkness of society that we have become accustomed to.

When it was published in Japan, it resonated with many readers as similar incidents occurred one after another, as if predicting what would happen in the future.
Through the eyes of detective Sugimura, who confronts perpetrators who seem to have filled their human shells with filthy water, the author reflects a misogynistic culture like a mirror and reveals the 'violence' that lies beneath the surface of everyday life.

“I remembered what my grandmother said.
“If you say you’re a good person as long as you don’t drink, as long as you don’t gamble, as long as you don’t cheat, that means you’re a bad person because you do those things.”
--- p.144

Don't make me laugh.
How arrogant of a woman to be so arrogant.
Don't think that attitude will be tolerated.
“I was so angry, and I was like, ‘What is this guy?’ and also scared, so I remember every single word clearly.”
On the topic of ○○.
Sasa Tomoki seems to really like this saying.
“I felt like I couldn’t just stay silent, so I sent the text to Yubi and said, ‘I’m sorry, but if you date this person, I’ll stop being your friend.’”
--- p.143

“Are you not accepting applications?”
“The bride’s father just came and said we shouldn’t accept any more wedding gifts.
“I was so busy that I had to return the ones I already received.”
Returning the wedding gift! In other words, the ceremony has been canceled.
--- p.264

“In the future, there will be things like inheritance.
Kazuya's father works for a good company and his family home is big.
“Wouldn’t it be pitiful if Ryusei suffered a loss?”
On the one hand, he is in debt because he cannot manage his household, but on the other hand, he is quick to calculate.
I never thought the words 'inheritance' would come up, but 'money' and 'property' are important keywords.

--- p.362