This novel serves as a clear example of how to underutilize a promising concept. The plot revolves around a man who, summoned as a hero, defeats the demon king, gets betrayed, and ultimately meets his demise. Then, decades later, he reincarnates as a hero to seek revenge against his former allies. While the basic premise is familiar, it still holds potential.
The protagonist's transformation, while initially sympathetic, feels rushed. He goes from advocating peace and forgiveness to seeking vengeance in a matter of days, which lacks credibility. Additionally, the villains lack depth and consistency, resembling generic anime tropes without any unique development. The encounters with these antagonists become monotonous and unengaging.
The supporting characters, though having some background, mainly serve as plot devices, offering information or assisting the main characters. Their roles are minor, and they lack the impact necessary to elevate the story. The narrative style, with excessive dialogue and minimal description, detracts from the overall reading experience.
Despite these shortcomings, the novel possesses some redeeming qualities, such as the well-crafted female lead, who defies typical gender stereotypes. Her character development and dynamic relationship with the protagonist add interest to the story.
In conclusion, I would rate this novel 2.5 out of 5, acknowledging its potential but lamenting the wasted opportunities. It managed to keep me engaged until the end, but the lack of exploration of its ideas left me wanting more. This is merely my personal perspective, and others might find different aspects worth enjoying. Lastly, please excuse any grammatical errors, as English is not my first language.