The Delivery Boy's Challenges

Delivery boy Derek Stone unexpectedly gains access to a powerful delivery system. Every time he successfully delivers an order, he earns a special skill. With these new abilities, he solves a world-class math problem and catches the eye of Old Mr. Carter, who decides to marry off his granddaughter, Lily, to Derek. Due to his talents, Derek is invited to represent the Centre Kingdom in the Four Symbols Painting competition. Throughout the contest, he excels in math, martial arts, medicine, and cooking, impressing everyone and winning praise from around the world, bringing honor to his country.