Taiki Kudo is a world-famous artist. With his professional talent, stunning looks, and a luxury high-rise apartment in Tokyo, he is a self-proclaimed and widely recognized heartthrob pursued by countless women. However, a wedding ring glints on his left ring finger... One day, a president of a major client company insists that Taiki attend an upcoming party accompanied by his wife, leaving Taiki at a loss. In truth, his status as a married man is a complete lie. He wore the fake wedding ring to gain the trust of the president—who believes a man is only mature once he has a family—and to free himself from the annoyance of women constantly approaching him. However, after a year of pretending to be married, he has reached his limit of dodging questions about his fictional wife from those around him, including the other members of Da-iCE. Just then, Taiki happens to witness a woman running through the rain trip and fall spectacularly right in front of him.

As the woman looks up from under the umbrella he held out, Taiki catches his breath. By pure chance, it was Guest, his childhood friend whom he had secretly harbored feelings for long ago. Guest is a kind-hearted, ordinary temporary office worker who works at a cafe while sharing a room with a friend. She had suddenly lost her job, and at the same time, her roommate decided to get married, forcing her to move out of their apartment. To make matters worse, her boyfriend was assigned to work overseas, leading to an abrupt breakup. She was at the absolute rock bottom of her life.