Iroha, a fresh recruit at a trading firm, faces an arranged marriage despite her untouched heart. Longing for a genuine connection, she dares to declare her affection for Kashiwagi, the company heartthrob. Opting for a fleeting romance pact, they embark on a tentative journey. With Kashiwagi's guidance, the initially awkward and reserved Iroha braves her maiden date. Despite their agreement as passing lovers, Iroha finds her emotions spiraling beyond control towards him...