Meat udon with raw egg. Very nice! The simmered pork and the onion were sweet, while the soup was just the water used to boil the udon, and there was a bottle of slightly sweet sauce that you add yourself for additional flavour. The portion was very big too!
野らぼー 錦町本店(Norabou Nishikichou-honten)
Also visited the branch near Kanda station. The udon was too soft and a bit bloated from being boiled for too long. The dried fish tempura was interesting though.
野らぼー神田北口店(Norabou Kanda Kitaguchi-ten)