Ookami ni Suzu

Suzu didn't mind living a solitary life, as her work kept her busy. Every morning, she found solace in seeing "that handsome guy" who rode the same train as her. One day, the president of her company was suddenly hospitalized, and he asked her to take care of the company during their busy season. At a loss for what to do, the "handsome guy" suddenly showed up, to her surprise. He turned out to be the president's nephew, Kanato Kamiya! When Kanato invited Suzu out for a drink, she was so anxious about her work situation that she burst into tears, but his comforting words made her fall in love with him... Just when Suzu thought that she couldn't afford to be lovesick at this critical time, Kanato returned to her company to take over as the acting president...?

(Source: Cocohana, translated)