Saku Fukuzawa is the main protagonist of the The Masterful Cat Is Depressed Again Today series. She is a young salarywoman who works as a foreman in a large company.

At work, Saku is a very focused, well-oriented, thoughtful and charming young woman as she was able to charm most of her coworker from her personality and her skills. However, she's actually a very lazy person behind her exteriors.

(Source: The Masterful Cat Is Depressed Again Today Wiki)