We were going to Ikebukuro today so I looked on Happy Cow to see if there was anywhere veggie for lunch in the area. Veg-suitable Chinese food is hard to come by in Japan so we decided to try Roran.
At lunch time the a la carte menu is not available so you have to choose between around 6 set meals which come with help-yourself salad and dessert (although I was told the dessert, annin doufu, wasn't suitable for vegetarians). Like other Taiwanese vegetarian places the menu relies heavily on mock-meats. We ordered the "chicken" with cashew nuts and "pork chop" (tonkatsu), the latter of which I was almost scared was actually meat when I tried it! Both came with rice (up to one free refill), soup and a small dish of pickles for a very reasonable 800-900 yen each. The food was tasty and filling, and for the price definitely good value for money.
I was sad to find that on the weekend they don't offer the a la carte menu at lunchtime as I really wanted spring rolls! So if you are looking for more choice perhaps visit in the evening. Service was a bit brusque compared to Japanese restaurants but was speedy despite a lunchtime rush happening just as we got there. Smoking is allowed throughout the whole restaurant so I wouldn't visit again with my daughter, but would stop in again if I were in the area without her.
Cons: Service a bit lacking, Restaurant all smoking