Mukouda Tsuyoshi, an ordinary modern Japanese man, is accidentally summoned alongside three high-school teenagers into the fantasy kingdom of Reijseger to act as legendary heroes against a looming demon threat. While the teenagers possess incredible combat statistics, Mukouda’s status reveals only a mediocre ability called "Online Supermarket." Recognizing the royal family’s suspicious nature and wanting no part in their war, Mukouda negotiates his immediate release. Armed with a modest stipend and his bizarre skill, he escapes the capital to live a peaceful life of travel, trading, and cooking in a brand-new world.His unique skill soon proves far more powerful than anyone anticipated. It allows him to access a digital catalog from modern Japan, letting him purchase everyday groceries, utensils, and condiments using his earth currency or gold earned locally. More importantly, the legendary, high-quality ingredients and
irresistible aromas of his cooking begin to attract powerful mythical beasts.His quiet journey takes a dramatic turn when he inadvertently summons legendary Fenrir, a majestic, god-like wolf whom Mukouda quickly names Fel. Voracious and demanding, Fel is utterly captivated by Mukouda’s modern
Japanese cuisine—especially marinated meats and savory dishes. To secure a steady supply of gourmet meals, Fel binds himself to Mukouda as his familiar. With an immortal, ultra-powerful beast protecting him, Mukouda’s safety is guaranteed, drastically shifting his life from a quiet merchant journey to an accidental adventure of epic proportions.As they travel toward the coastal town of Karin, Fel’s hunting prowess regularly yields massive quantities of rare monster meat, which Mukouda meticulously processes, cooks, and consumes. These meals grant Mukouda’s body immense, permanent physical blessings and magic stats through the food's hidden properties, transforming the once-average human into a formidable physical specimen. Along the way, they rescue a young, timid slime named Sui from a dangerous dungeon. Mukouda adopts Sui, who quickly grows affectionate, learns acid attacks, and loves helping out.To maintain a low profile and earn honest money, Mukouda registers with the Adventurer’s Guild, though his overwhelming companions routinely shatter common-sense expectations. Despite his desire for tranquility, Mukouda’s journey becomes a delightful culinary odyssey, balancing the perils of a fantasy realm with the comforting, mouth-watering joys of modern gastronomy shared with loyal, magical companions.