g@me.

A young ad executive's life has been turned upside down when a vicious client ruins his three billion yen project. Through his chance meeting with the disgruntled daughter of his enemy, he plans a vengeance scheme. The young woman agrees to play the victim of his bogus kidnapping.
(Source: Letterboxd)
~~ Adapted from the novel "The Name of the Game Is a Kidnapping" (ゲームの名は誘拐) by Higashino Keigo (東野圭吾).