Jade, a 15-year-old, is brutally exiled by his status-conscious father, Simon, on his coming-of-age day for failing the "Job Change Ritual" and remaining a "Novice." In this world, Novices are considered the weakest and most useless, a fact Simon cannot tolerate. Despairing, Jade suddenly recovers memories from a past life in "Japan," realizing his current world is "Novice is the Strongest Online" (NSO). This revelation transforms his outlook: Novices, though deemed useless, can become omnipotent through skill points and diverse skills.
Armed with NSO knowledge, Jade quickly hunts slimes for skill points, acquiring "Search" to detect monsters. He then crafts a unique magic tool called "Change" by carving a specific magic circle onto slime magic stones. "Change" allows him to swap a monster's internal magic stone with a weaker one, debilitating even powerful foes like Rush Boars and Earthquakes, which he defeats for significant skill points. He also learns "Storage," a Novice-specific spatial magic skill, to store monster materials.
At the Adventurer's Guild, Jade's ability to produce monster corpses from thin air bewilders receptionist Silvia. Despite his "Novice" job, he insists on registering. Test supervisor Ramon is initially arrogant and dismissive, but Jade's use of "Change" to effortlessly defeat an "Earthquake" monster during the test utterly shocks him. Ramon, Silvia, and the Guild Master are convinced by Jade's unique methods and the evidence of the swapped magic stones. Jade sells his materials, securing his finances, and is registered as an E-rank adventurer, but with a "Three-Star Slayer" designation allowing him to take B-rank quests.
Driven to enhance his combat, Jade intentionally triggers a "magic disaster" by carving an incorrect "Change" magic circle, summoning eight "Phantoms." He defeats them using correct "Change" tools, gaining massive skill points. He invests these into "Body Enhancement" and "Martial Arts," dramatically increasing his physical prowess. He tests his new strength by defeating a "Shadow Wrestler" without "Change," exploiting its predictable attack patterns.
Returning to town, Jade witnesses a kidnapping. Without hesitation, he acquires "Assassination Arts" and immediately intervenes, using the rapid movement skill "Shukuchi" to incapacitate one of the kidnappers. From an exiled, powerless boy, Jade has rapidly transformed into a resourceful, powerful, and proactive adventurer, ready to confront both monstrous and human threats.
