Koujitsu (好日) is a small shop in Higashi-Nakano that is run by an all-women staff and claims to be ”mukacho” (無化調), in other words "no msg." Although I enjoy my daily doses of the controversial chemical, I guess sometimes I can do without it.
The Tsukemen seems to be the most popular.
IMHO, Marucho-kei is better than Rokurinsha-kei.
The Ramen here is also very good. In fact, I think I prefer the ramen over the tsukemen.
The soup is light with just enough shoyu flavor and the noodles are overly chewy almost like udon. They kind of reminded me of Suzuran.
Anyway, I've decided to give up on the miso ramen for now.
Actually I'm not giving up. I'm gonna start working on something else first.