I was thoroughly particular about fresh raw lamb meat! It is very popular because it has few habits and plenty of umami, so it is easy to eat even if you are not good at first time or lamb.
The most popular is Ramchop! We have prepared several kinds of boned meat that shines photos. Located a 3-minute walk from Nihombashi Station on the subway, it is open until 5:00 am! Healthy lamb meat and vegetables can be eaten without guilty even in the middle of the night.