This novel stands out as the pinnacle of regressor literature, its purpose is to delve into the extraordinary possibilities and tales behind characters and events that wouldn't occur in regular circumstances, and it achieves that admirably. It shares similarities with 'SSS-class Suicide Hunter' by the same author, but avoids unnecessary plot complexities. The author has truly refined their craft in this work, presenting the main character, Undertaker, as a mature and enigmatic figure. Despite appearing nonchalant, his humor even in the face of同伴 loss reveals the depth of his resilience and the lengths he's gone through, having lived centuries and honed his mental strength.
What impresses me is that the narrative doesn't solely rely on the protagonist's thoughts. With the character's ability to manipulate perceptions, making them universally likable, the author uses this skill to showcase a human with values that resonate with Undertaker in a harsh world. In contrast to the author's other works, there's a focus on romance, which provides a welcome relief, especially given the strong romantic arc in 'SSS-class Suicide Hunter.' The author excels in subtle details, like why the character refuses to reveal their true name, and in crafting dangerous anomalies that pose genuine threats to regressors. Even during moments when the protagonist seeks respite from his苦难, these off-beat interactions shed light on his supporting cast.
What sets this novel apart is its unique perspective, as it tells the story from the viewpoint of a failed regressor. It's not done merely for novelty, but because it adds a fresh and authentic dimension to the genre. If adapted into manga, manhwa, or anime, I have no doubt it would rank at the top of its season.