Will you let me love you with all my heart?

Chiyo Takamura is a 30 year old woman currently working in the civil engineering department of a major construction company. Meanwhile, Ichika Seo is a 45 year old man who is the vice president of a foreign company. Ichika, who has feelings for Chiyo, confesses his feelings and asks her out on a date. However, Chiyo always thought of Ichika as a casual lunch buddy. As such, the two begin a trial period as a couple to see how their relationship will unfold.