No offense, but making trip to Japan and eating at Joyful is like going to the Bay area and eating at Denny's.
Oh, also went to the shabushabu place in the Fukuoka train station mall on the 10th floor. Awesome. Best shabushabu in my life (not too pricy). Great view from the roof.
Yeah, and Miso soup and rice and other stuff for breakfast.
Also, if you know of a Joyfull in the Bay area let me know.