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Reaching the end of his college years, trying to find a job, Sakurazaka Kouhei was reaching the end of his rope. Months were dragging by, with no job offers in sight. If he didn't find something soon, he would have to go home and take over the family business. Then he spotted it. Suruga Systems Corporation, a small data processing company. On their job-wanted posting: "You seek possibilities you cannot see yet." Accepted at once for the job, little did he know what he was getting into.
Picking up what appeared to be a runaway girl, next to the cigarette vending machine at a convenience store, Hira Katsuki, the protagonist, reluctantly takes her home to protect her, thinking it would be troublesome to leave her with a handmade cardboard tag around her neck that says "Please pick me up" and that she would be involved in a crime if left unattended. When he asks her why she ran away from home, she continues to joke around about it. The two gradually come to know each other through their conflicting conversations, and promise to live together for one week only. Living together while being unaccustomed to each other, the two of them…