Gintama, 5

The Helpful Boys have to help a mother who has come to Edo to search for her son Hachirô, from whom she hasn't heard since he decided to move to the city. But it turns out Hachirô is in trouble with some yakuza... We'll also see a documentary about Katsura's daily life, a dango eating contest, and... does Otae get a fiancé?!