Osomatsu-san is a Japanese anime series based on Fujio Akatsuka's 1960s manga series, Osomatsu-kun. It follows the comedic adventures of the Matsuno sextuplets—Osomatsu, Karamatsu, Choromatsu, Ichimatsu, Jyushimatsu, and Todomatsu—as they navigate adulthood while retaining their mischievous and lazy personalities. This modern reimagining updates the original series with contemporary humor and social commentary, maintaining its appeal to both new and nostalgic audiences.