Tempest Blood, reincarnated into nobility from a modern world, possesses a magical talent shaped by her powerful imagination, honed through her past life as a manga and anime enthusiast. She finds the oppressive etiquette of aristocratic society suffocating and desperately desires the freedom of an adventurer. Her parents, eager to secure a political alliance, deceive her into a marriage with Duke Wendel Blood, a man notorious for his cold demeanor. They lure her to Blood Territory under the pretense of a dungeon trip, but instead, she is forced into a sparse wedding ceremony where the Duke offers only a single perfunctory sentence to the guests before retiring. Feeling betrayed, Tempest quickly realizes the marriage grants her unexpected freedom, as the Duke married her solely to avoid the King's matchmaking. His attendant informs her she has full permission to do as she pleases, which she seizes as an opportunity to pursue her dream and embarrass her indifferent husband by gaining fame as a legendary adventurer.Immediately after her parents leave the territory, she orders a carriage to the Adventurer Town, a well-organized area managed by the Ducal House to support the dungeon's material trade. Despite her maid Ellis's concerns about safety, Tempest insists on going alone. At the Adventurer's Guild, she registers as a F-rank adventurer despite a condescending receptionist who looks down on her noble attire. She cuts her finger for the required blood identification, immediately heals the wound with magic, and opens an account to manage her earnings. Her first dungeon expedition begins on the same day. She finds three adventurers collapsed from Gelgar hypnosis. Viewing the floating single-eyed monsters as a lucky bounty, she dispatches them with two shots of her finger gun magic, chanting only a quick "Bang" instead of elaborate incantations. She heals the fallen adventurers and recruits them to help extract the valuable Gelgar Cores, which require skill to remove without damage. At the Material Purchase Shop, the cores sell for a high price due to their pristine condition, and she generously rewards each adventurer with a silver coin, earning their gratitude and building her reputation.Tempest openly claims her identity as the Duchess of Blood, but most adventurers dismiss it as arrogance. She once proved her words by using magic to painfully widen the nostrils of skeptical adventurers until they apologized, a tactic that instills both fear and respect. Her personality is a mixture of pride, confidence, and impulsiveness, yet she demonstrates generosity and strategic thinking. Her backstory reveals her previous life, where she prioritized work over happiness and felt she had things left undone, motivating her to embrace every opportunity in this reincarnation. She reflects on her failed attempts to fit into noble society and her determination to live freely. The main conflicts in her story stem from her dual life as a Duchess and adventurer, forcing her to keep her activities secret from her noble family, who would consider it a scandal. Her husband remains indifferent, which both enables her pursuits and fuels her resolve to succeed with the goal of potentially forcing a divorce through fame. Her growth is showcased through her early victories, including efficient monster hunting, core extraction, and social maneuvering among guild members. The story ends with her preparing to purchase proper adventurer equipment, ready to ascend the ranks and chase her dream of becoming a legendary figure.