highly-unnatural's manga / #coworkers(2)

A love full of mistakes between my boss and I is about to begin?! Just because of a single mistake, my life is about to go through an unbelievable change.... Drunken, Nagato Hiroki committed a mistake of one-night stand with a man who he barely knows! As chance would have it, years later his newly assigned boss, Kurosawa, is that man from the past he had one-night stand with!

Kaneshiro Jou is a middle-aged man who has just been dumped by his lover when he is unexpectedly killed. Then it turns out that was a mistake, and he he gets to keep living - with a surprising twist.