Kensei no Osananajimi ga Pawahara de Ore ni Tsuraku Ataru node, Zetsuen shite Henkyou de Makenshi toshite Denaosu Koto ni Shita.

A man suffers emotional and verbal abuse from his girlfriend and childhood friend, Alfine, who is both his equal in age and a highly accomplished adventurer. She is renowned as the "Flawless Sword Goddess," holds the title of "Sword Master," and has been honored as a knight by the kingdom. Despite her success, she treats him as a mere accessory, subjecting him to harsh words and power harassment, which erodes his self-worth. He resigns himself to this role until her duties as a knight reduce their time together, allowing him to take on quests alone and begin reclaiming his dignity. As he becomes more independent, he recognizes the imbalance in their relationship and decides to end it. Returning the sword they once exchanged, he leaves her behind, vowing to change his name and live freely. Soon after, his life improves dramatically, earning him recognition as a top adventurer and a marriage proposal from a noblewoman.