"Takumi is one of the major characters in the Japanese manga ""Leave The World Behind."" He is a teenage boy who is initially portrayed as quiet and introverted. However, as the story progresses, Takumi's character develops, and his inner strength and courage become evident.

Takumi is seen as an excellent runner and is a member of his school's track team. He has a natural talent for running and often pushes himself to excel. Takumi's determination and hard work are evident in his training habits, which are shown in detail in the manga.

Takumi is a good friend and is always willing to help others. When his friend, Saki, is struggling with a personal issue, he listens to her and offers her support. This kindness is shown throughout the manga, as Takumi interacts with other characters.

As the story progresses, Takumi is faced with several challenges. He is forced to confront his past and deal with emotional trauma from his childhood. This experience helps him to grow and become more confident in himself.

Takumi's character development is a significant aspect of the manga. The reader watches as he develops from a shy, reserved teenager into a confident young man. His courage and determination inspire other characters, and he becomes a role model for those around him.

In conclusion, Takumi is a well-developed character in the manga ""Leave The World Behind."" He is a talented runner, a good friend, and someone who grows in strength and courage as the story progresses. His character development is an essential aspect of the manga, and his story is sure to resonate with readers."