From the Warring States Period to the Three Kingdoms, I Have Too Many Enemies!

An ordinary modern man who was riding a roller coaster accidentally traveled to a different world that merged the Three Kingdoms and the Warring States Period, and became the "Legendary General" fought for by various forces. He doesn't know martial arts or magic, but he relies on his rhetoric, bizarre tactics, and battlefield-style cooking to survive in troubled times and become a legend.