Kenzo is a great ramen place in Toronto that rarely ever has line ups and the service is super quick. I usually frequent the Bloor location, but the first one I tried was the Yonge Street spot. The place is pretty clean inside and looks like your standard ramen house decor. The staff are friendly, but you'll have to call them over at times as they are usually busy with the kitchen or serving.
The ramen here is a little greasy, but the taste is pretty good. The broth isn't as clean as I'm used to with places like Kinton and Sansotei taking over as my favourites. Also the various toppings aren't cooked as well or as delicately as those shops I've mentioned. They add more of a Chinese flare with their vegetables and toppings over the traditional Japanese ramen, but it works well.
If I'm in a pinch and need to get something quick to eat Kenzo is a good place to go. the ramen portions are also the largest out of any other ramen shops in the GTA and their fried dumplings will fill you up alone. The price is right and the food is good, so definitely give this place a try.