Takemichi's attempts to change the future in the series "Tokyo Revengers" raise several moral implications. By attempting to alter the course of events and prevent tragedies from happening, he is essentially trying to save lives and bring about a better outcome. However, his actions also involve interfering with the natural flow of time and destiny, which can have unintended consequences and raise questions about free will and determinism. Additionally, his interventions may lead to unforeseen changes in the lives of those around him, potentially causing more harm than good. Ultimately, the moral implications of Takemichi's actions depend on how they impact the individuals involved and whether the ends justify the means.