Note: If "Rex" was not the specific story you meant, or if you were referencing a specific "King" (Rex) scenario where Nicolas pretends to be a monarch, please clarify, as that specific plotline is less common in the main canon.
The first "Le Petit Nicolas" comic strip was published in the French magazine "Pilote" in 1959. The series quickly gained popularity, and its success can be attributed to the relatable and humorous portrayal of childhood. The comic strip follows the everyday life of Nicolas, a young boy who often finds himself in absurd and humorous situations. The series tackles various themes, including friendship, school, and family, making it a beloved favorite among both children and adults. le petit nicolas rex english translation full