"Tokyo Revengers" explores the theme of redemption through its characters by showcasing their struggles with their past mistakes and their journey towards seeking forgiveness and making amends. The main character, Takemichi, for example, is given a chance to travel back in time to prevent tragic events and change the future, which allows him to redeem himself and protect his loved ones. Other characters in the series also face their own demons and work towards redemption by confronting their past actions and striving to become better individuals. Through these character arcs, the anime emphasizes the importance of self-reflection, growth, and second chances in seeking redemption.