"Kazuya Kagami is a major character in the manga series ""My Wife is Back"". He plays a significant role in the story as the protagonist's ex-boyfriend and current employer. Throughout the story, Kazuya is depicted as a successful businessman who has a charismatic and confident persona.

Kazuya first appears in the series as a successful CEO of a clothing company, and the protagonist's ex-boyfriend. He is depicted as handsome, charming, and well-mannered. Despite his break up with the protagonist, he maintains a friendly relationship with her and even offers her a job in his company.

As the story progresses, Kazuya's personality is revealed to be more complex. He is shown to be insecure and emotionally guarded, often hiding his true feelings behind a façade of confidence. It is revealed that his confidence is a defense mechanism to avoid being hurt by others.

Despite his flaws, Kazuya is a caring and compassionate person. He has a soft spot for the protagonist and her family, and is always willing to help them when they need it. He also has a good sense of humor, which helps him to bond with those around him.

Kazuya's appearance is another aspect of his character that is emphasized in the story. He is tall and well-built, with a sharp jawline and piercing green eyes. He has a distinctive fashion sense and is often seen wearing designer clothes and accessories.

Overall, Kazuya is a complex and multifaceted character who adds depth and nuance to the story. He is a successful businessman with a charming personality, yet has emotional scars that make him vulnerable. His relationship with the protagonist is an important aspect of the story, and his character development throughout the series is compelling."