This restaurant is at the 6th floor of Vito (ice cream shop) Building: not very easy to find.
It has a super nice atmosphere, with smiling staff and a very clean and tidy furniture. You can easly understand that people enjoy working there.
Food is good, they are famous for chicken yakitori, i suggest the chicken breast one and the salad (simple and with a lots of vegetables).
There is no much more than that to eat, but i think it deserves a visit for a different but very funny dinner in the middle of shinjuku.