A surrogate mother steps into crime to save her abused son, and the story develops into a zero-ransom kidnapping plot. It is a thrilling crime novel that exposes social distortions.

No ransom, five hundred million yen to be taken.

A man who sells slot-machine “tips” is dragged into dangerous money and tangled relationships on the dark side of the pachislot industry. It is a pachislot noir that mixes lightness with a cold undercurrent.

A man selling fake strategies falls into the world of illegal ROMs and dark money.