Miyu is an 8th grade girl, whose parents have been hired by NASA. They take off to America leaving Miyu with Mr. Saionji. Later, Mr. Saionji decides to go on a 1 year long trip to India leaving Miyu alone with his son, Kanata. More complications rise when an Alien baby and his babysitter pet crashes/lands in their house. To make things worse, alien baby starts calling Miyu and Kanata Mom and Dad, also showing ESP power and floating around.

The story follows Kintaro, former leader of a widely feared and respected biker gang, who decides that its time to "straighten out" and become a "salaryman" since his wife died and he has to take care of his young son. (Source: AniDB)

In a school where after school activities are mandatory among all students, Hajime and her friend Sayo come across a new club that they have never seen before. The club is called "The Cultural Activity Preservation Club." The two enter the room to find all kinds of analog jobs and activities, such as handcrafting mats and toothpicks. This is a unique cultural anime mixed with comedy so as not to bore you, this is Double J! (Source: Mangahelpers, edited)