Nice people, good location in Tokyo, typical freedom accorded to instructors at Japanese universities to create and improvise within a roughly-defined educational framework.
Cons
No real advancement opportunities for most teachers. Roughly-defined educational framework means one works within a self-defined bubble, with little input or interaction regarding the overall education product.
Superb vacations - long
Monthly salary above average slightly
Lovely Japanese Professors to work with
Foreign staff good calibre
Very cordial and collegial
Good students
Good exchange rate with the US Dollar
Right next to the subway station in a lovely part of downtown Tokyo
Cons
Little to complain about
Definitely a situation where one group holds all the power and keeps it that way