Yuusei Shirasaki is a central character in the anime series 'Atarashii Joushi wa Dotennen'. He is portrayed as a diligent and earnest employee working under a new and somewhat unconventional boss. Yuusei is known for his calm demeanor and ability to adapt to the quirky leadership style of his superior, often finding himself in amusing situations. Despite the challenges, he maintains a positive attitude and serves as a grounding presence in the workplace, showcasing loyalty and dedication to his job and colleagues.