"Open every day for lunch and dinner, this hard working Japanese restaurant deserves every ounce of the success it has. The food here is delicious, colourful, and relatively nutritious, while the setting is fairly simple, clean and informal with long tables and benches often shared with neighbouring groups. On the menu there's a choice of authentic Bento Boxes, Ramen, Yakisoba udon, Sashimi, Rice Gohan and various salads and side dishes pretty much everything you'd expect from a Japanese restaurant in the UK. With Bento Boxes from about £10 upwards, and Ramen from about £7, it's very reasonably priced as Japanese restaurants go. The only thing they don't do well is desserts but that's a common theme across all Japanese restaurants I've been to in the UK with Tenkaichi offering just one choice: a Japanese red bean pancake roll served with a plum sauce. It has firmly established itself as one of Cardiff's best and most reasonably priced Japanese restaurants, and as a result is hugely popular at lunchtimes as well as in the evenings so you may have to wait a short while for a seat at times. They also have a separate (but similar) takeaway menu."