Takemichi's journey in the anime "Tokyo Revengers" can be likened to the concept of the butterfly effect in chaos theory. The butterfly effect suggests that small changes can have larger, unforeseen consequences. Similarly, Takemichi's seemingly small actions and decisions throughout the series have significant impacts on the future timeline he is trying to alter. Just like how a butterfly flapping its wings can cause a chain of events leading to a storm on the other side of the world, Takemichi's efforts to change the past ripple through time and drastically alter the future.