Set in Japan, this thriller came highly rated. I just wish I could remember who told me about it as I'd like to thank them.
From the Blurb:
Iwasaki Shiro, a 46 year old salaryman in Tokyo is having a midlife crisis. Unexceptional in his IT job, he works in the shadow of his boss’s charisma. His children are embarrassed by his mediocrity and his wife rarely thinks of him as an individual. He has nothing to show for decades of conformity and doing the right thing.