"100th Time's the Charm" is a fantasy manga that explores themes of perseverance, redemption, and the consequences of one's actions through a time-loop narrative. The protagonist, a young man named Ryner, is cursed to relive his life repeatedly after failing to prevent a catastrophic event in his original timeline. Each time he dies or reaches a certain point in his life, he is sent back to the beginning, retaining all memories of his previous attempts. This cyclical existence spans 99 lifetimes, during which Ryner experiences various roles, relationships, and failures, all while striving to uncover the truth behind the curse and the event he failed to stop.

The story begins with Ryner in his 100th life, determined to break the cycle and achieve a different outcome. Armed with the knowledge and skills accumulated over his past lives, he sets out to alter the course of events that have repeatedly led to disaster. Key to his journey are the recurring characters who appear in each lifetime, including a childhood friend, a mysterious sorceress, and a rival who seems to hold a connection to the curse. These characters play pivotal roles in Ryner's quest, their actions and relationships evolving across timelines as he attempts to influence their fates.

The narrative delves into the intricacies of Ryner's past lives, revealing how his choices and failures have shaped the world around him. Flashbacks and interludes provide insight into the events that triggered the curse, as well as the broader political and magical conflicts that underpin the story. The manga balances its exploration of Ryner's personal growth with a larger plot involving ancient prophecies, forbidden magic, and the struggle for power among factions vying for control of the world.

As Ryner progresses through his 100th life, he faces moral dilemmas and challenges that test his resolve. The manga examines the weight of his accumulated experiences, highlighting the toll of repeated failures and the burden of knowledge. Themes of sacrifice, forgiveness, and the possibility of change are central to the story, as Ryner seeks not only to break the curse but also to redeem himself for past mistakes.

The artwork complements the narrative, with detailed depictions of the fantasy world and expressive character designs that convey the emotional depth of the story. The pacing alternates between moments of introspection and action, maintaining a balance that keeps the reader engaged. "100th Time's the Charm" is a compelling exploration of time, fate, and the human capacity for growth, offering a rich and layered story that appeals to fans of fantasy and character-driven narratives.