A high schooler, Kimi, who lived alone since his parents were deceased and his sister was out of town, worked hard to earn money and lived paycheck to paycheck. However, things weren’t looking good. One day, a flyer appeared in his mailbox. It was an advertisement for a high paying part-time job. The job was seemingly about “Taking care of a pet.” Later on, to his surprise, he found out that the job was actually for taking care of a beautiful girl from his class, Shiratori—who was from a wealthy family.