Hideo Yokoyama (横山 秀夫) worked as an investigative reporter with a regional newspaper north of Tokyo for 12 years before striking out on his own as a fiction writer. He made his literary debut in 1998 when his collection of police stories Kage no kisetsu (Season of Shadows) won the Matsumoto Seicho Prize; the volume was also short-listed for the Naoki Prize. In 2000 his story Doki (Motive) was awarded the Mystery Writers of Japan Award for Short Stories. His 2002 novel Han'ochi (Half Solved) earned a Konomys No. 1 and gained him a place among Japan's best-selling authors. He repeated his Konomys No. 1 ranking in 2013 with 64 Rokuyon (64), his first novel in seven years. Other prominent works include his 2003 Kuraimazu hai (Climber's High), centering on the crash of JAL Flight 123 that he covered as a reporter in 1985; the World War II novel Deguchi no nai umi (Seas with No Exit, 2004); the police novel Shindo zero (Seismic Intensity Zero, 2005); and the story collection Rinjo (Initial Investigation, 2004).
Stepping on Shadow is a satisfying and neatly written thriller by Hideo Yokoyama.
We are first introduced to our MC (a thief) on the day of him getting released from prison and slowly we learned his dark past: he once fell in love with a young woman whom his own twin brother was also in love with. After the young woman chose him over his twin, the younger twin turned to criminality for the thrill, and his actions eventually resulted in his own death and the death of the brothers' parents in a tragic fire.
Now years after the tragedy, the MC is left with no family, the young woman he loved but couldn't marry and...the 'ghost' of his younger twin, whispering into his ears as the MC moved through his dangerous life as a lowly thief trying to survive in a big city. And troubles are indeed coming his way as both cops and criminals from the underground society were chasing after him.
It's never explained whether the supposed 'ghost' of the younger twin is a real ghost, the MC's delusion or his subconscious mind talking to himself, but I like how this pair of twin interacting with each other throughout the story; I like the MC's internal conflicts and his relationships with those around him (e.g. cops, other thieves, his lover, etc). I also like how the mystery of the tragic fire that killed the MC's twin and parents is explained in the very end.
Among the different stories in this book, I like the story about the MC accepting a request from a fellow thief to play 'Santa Claus' for an orphaned little girl during Christmas.
PS: but I don't really like how the young woman (the MC's love interest) is being described as passively waiting for *years* for the MC to pick her up and give up his criminal activities.