Yuuta's family is turned upside down when his father remarries, introducing a beautiful new stepmother, Saki Ayase. As they try to keep their distance, they're forced to confront their differences and learn to live together. Saki grapples with finding her independence, while Yuuta figures out how to treat his new step-sister with respect. As they grow closer, their bond evolves from strangers to friends, leaving the door open for a romantic connection to develop.

A high school student's life takes an unexpected turn when his father remarri...