Arisa works for a spinning company in Himeji City, Hyogo Prefecture, and has a crush on Keita, the president's son, who just returned from New York. One night after a business dinner, Arisa stops by Keita's house and spends the night with him.

Arisa enjoys an office romance with Keita, but in a moment of insecurity, she decides to meet him to ask if they are officially dating. However, once she arrives at the office, she sees Keita with her colleague, Miyuki, in his arms.

Arisa keeps a distance from Keita and tries to concentrate on her work, but Miyuki informs her of Keita's plans to confess his love for Arisa properly. Realizing her mistake, Arisa calls Keita and rushes to tell him that she loves him.