The book features the stories of Yayoi Mukumori, Hazuki Rensuke, and Liu Shumei. Yayoi, despite her flaws, is someone who can only be loved. Hazuki is a skilled businessman leading his father's company with a hollow heart. Liu Shumei, a beautiful Chinese model, becomes the center of attention after signing an exclusive contract with Rensuke's company.

However, when a notebook containing Shumei's past is delivered to the company, Rensuke and Shumei's lives spiral into chaos, causing the company to face a sudden crisis. In the midst of despair, Yayoi offers her small acts of kindness to help them through their struggles.