This is a story about stealing a boyfriend from a best friend. Nagisa, the best friend, was obsessed with a different man while having a boyfriend named Taichi. Although she had feelings for Taichi, she held back because they were best friends... But after seeing Taichi's lonely face, she couldn't help but blurt out, "Why don't you break up with her and date me instead?" When she heard that he was going on a trip with a senior in a month, she gave him time. If they were to reconcile, she would give up... But Nagisa went on the trip leaving Taichi behind. So she decided to take Taichi, both heart and body.