Mr. Osomatsu

Mr. Osomatsu is a Japanese adult comedy anime produced by Studio Pierrot, based on Fujio Akatsuka's 1962 manga series, Osomatsu-kun. Celebrating Akatsuka's eightieth birthday, the series follows the sextuplet Matsuno brothers from the original series as 20-something adults, with a more ribald sense of humor compared to Osomatsu-kun.

From Wikipedia, licensed under CC BY-SA 4.0.