"Tetsuo Iwamoto is a prominent character in the manga ""Before It’s Too Late"". He is introduced as one of the main characters in the series and is an essential figure to the plot's development. Tetsuo Iwamoto has a central role in the story, and his character is explored in various ways throughout the manga.

Tetsuo Iwamoto is first introduced as a successful businessman who owns a large company. He is a shrewd and calculating individual who is known for his intelligence and business acumen. Tetsuo Iwamoto is a highly respected figure in the business world, and his reputation precedes him wherever he goes.

As the story progresses, the manga delves into Tetsuo Iwamoto's personal life and explores his relationships with various people, including his family members, colleagues, and acquaintances. He is portrayed as a complex character with many layers to his personality, and the manga carefully weaves these layers together to create an intricate and intriguing character.

Despite his success in business, Tetsuo Iwamoto has a troubled personal life, with his relationship with his wife being particularly strained. His wife frequently complains about his workaholic tendencies, which have caused a significant strain on their marriage. Tetsuo Iwamoto is shown to be deeply troubled by the effect his work has had on his personal life and is portrayed as regretful of the choices he has made.

Tetsuo Iwamoto's character arc is a central focus of the manga, as he learns to confront his flaws and improve his relationships with those around him. The manga showcases his growth as a person as he slowly learns to prioritize his personal life over his work, and his relationships with his wife and family improve.

Overall, Tetsuo Iwamoto is a pivotal character in ""Before It’s Too Late,"" whose growth and development drive the story's central themes. His complex character and troubled personal life make him a compelling and relatable figure, and the manga masterfully explores his journey towards self-improvement."