Snack Bar J is Jun & Jinpei's day job, as well as residence, and meeting place for The Science Ninja Team.
Snack Bar J is located in a large building owned by Dr. Nambu. It is a multi level building. The ground level contains a garage where Jun and Jinpei park their G machines. The restaurant is also located on this floor. The bar and eating area is very large, and contains a place where bands (including Jun herself) can perform. It has a disco ball. When The Science Ninja Team is not at the International Science Organization headquarters or at the Crescent Coral Base, they gather at the snack bar. In one of the upper floors has at least two bedrooms. One is for Jun and the other is for Jinpei. However, Jun and Jinpei easily takes in refugees which suggests a third bedroom.