"Le Petit Nicolas" is a beloved French children's book series created by René Guitton and illustrated by Jean-Jacques Sempé. The stories follow the adventures of a young boy named Nicolas and his friends as they navigate childhood experiences, school, and family life in 1950s France. The series is known for its humor and relatable situations, making it popular among both children and adults. The character of Nicolas is depicted as innocent and mischievous, often getting into amusing predicaments with his friends like Alceste and Clotaire. The books have been adapted into various formats, including animated series and films, further expanding their reach and charm.