Isobe Isobee Monogatari: Ukiyo wa Tsurai yo (2015)
Genres: Comedy
Type: ONA, Episodes: 33
Aired: Dec 12, 2015 to 2016
Studio: Gathering
Source: Manga
Rating: PG-13 - Teens 13 or older
Synopsis:
Isobe Isobee is a lazy, slacker samurai with big dreams. He lives with his mother, who thinks highly of him. He lays around the house, sneakily looks at Edo-period pornography without his mother noticing, naps at school... but he plans to become a respectable samurai one day!

(Source: MangaHelpers)