“We conduct ourselves, from beginnings to end,
with nothing but creative and constructive minds.”

-Tetsuohu Koiso


“Office is a DOJO” where we exercise ourselves to the BEST.

In the DOJO, we will perform an objective, accurate, and speedy professional services with kindness from bottom of our heart and participate in the society and make a contribution to it.


“Office is the DOJO” is our flag.

We respect our professional mission and the spirit of independence. We accomplish our professional mission with the spirit of self-respect, independence, and professionalism.
We are providing accounting and tax services strictly based on the U.S. accounting principles, and U.S. tax code mainly to the subsidiaries of Japanese corporations in the Southern California under law-abiding spirits.


“Accounting is the mirror which reflects the philosophy of the company.”