Kibe-no-Chaya is a Japanese tea cafe styled shop and light meal restraurant at the parking space of Manyo-no-Mori. They serve some buckwheat noodles and udon noodles but what I caught my eyes is Kuromai Karee or "Black rice curry". Black rice curry is a curry served on black rice. It is believed that ancient Nara era people during 8th century ate "black rice" as a staple food. The menu is a device so that black rice dish can be an eatable stuff, I guess. The curry is 500 yen. Not bad for a light meal for lunch.
When you are walking around Hamakita Forest Park, finding a restaurant is very hard thing to do. This restaurant in Aratamano Yu may be one of the few options. If you like Japanese teishoku styled menus maybe you can settle for it. If not bring your own lunch.