At least in Tokyo, you can find Mexican restaurants easily.
In my town, Shimokitazawa, there are a few.
This " Flavor Joint ( Flava Joint) " ( I like this naming. ) is located on Inokashira Dori. Almost 10 min. from Shimokitazawa Station. Near Kitazawa Jr. High School.
Worth trying ? Yes. I like their decor. It feels like that you were invited to some Mexican's home. Cozy. Quiet. Shimokitazawa is popular among youngsters.
Some restaurants are too crowded or too noisy to have conversation.
Here, you can relax. If you get seated at the counter, you can enjoy watching the chefs are cooking juicy steaks, burritos, decorating your lunch plates.....
I had this lunch burrito plate. Before this plate, they gave me a tiny zucchini potage soup, then this plate had pickles, grated carrot salad, tomato salsa and chicken burrito cut in halves. Oh, so authentic! I wouldn't mind to go back there again for this burrito! Everything was fresh and tasty.
Flava Joint ---- Shimokitazawa
Come out of West exit of Shimokitazawa Station.
Take a right, you will see Seven/ Eleven, keep walking. Just keep walking.
When you hit the end of the road, Kitazawa Jr. High is right there.
Don't cross the pedestrian crossing. Turn left.
Flava Joint is on your left. They have steaks also. I would like to try them someday.