Stuck on a crowded train with the infuriatingly handsome man who just ruined her business proposal, Kaya Sato thinks her day can't get worse. But when a persistent ex-boyfriend boards at the last second, her seatmate, Kenji Tanaka, surprises her by claiming they're engaged. For the next two hours, these two rivals must play the part of a loving couple amidst the breathtaking scenery of the spring cherry blossoms. But as the train speeds toward Kyoto, their fake affection begins to feel startlingly real. Will their arrival mark the end of their charade, or the beginning of a journey they never expected to take?