If you go around lunch time, they have this "special" where you can add $1 and get a "combo." You can add a california roll, crab and roe salad, tofu, or whatever onto it. It's a nice little snack before your lunch.
I order the Aso takana pickle ramen. This is always my go-to dish here at Ajisen. The traditional one is good as well. My friend ordered the scallop ramen, and said she was thoroughly disappointed. However, the dish was filling.
The restaurant is quite tiny, so make sure you go a tad before or after lunch. Service is okay, and turn-over is surprisingly fast.