EXHIBIT 5

                       [Letterhead of The Otto Law Group]


                                January 12, 2004


NANNACO, Inc.
9739 Cobb Street, #1
San Antonio, Texas 78217

         Re:  Registration of Common Stock of NANNACO, Inc., a Texas
              corporation ("NANNACO").

Ladies and Gentlemen:

In connection  with the  registration  on Form S-8 under the  Securities  Act of
1933,  as amended,  of  45,000,000  shares of common  stock of NANNACO,  we have
examined  such  documents  and have  reviewed  such  questions of law as we have
considered necessary and appropriate for the purposes of this opinion and, based
thereon,  we advise you that, in our opinion,  when such shares have been issued
and sold in accordance with the registration  statement  referenced herein, such
shares will be validly issued,  fully paid and nonassessable shares of NANNACO's
common stock.

We hereby  consent  to the  filing of this  opinion  as an  exhibit to the above
described registration statement.

                                        Very truly yours,

                                        THE OTTO LAW GROUP, PLLC

                                        /s/ The Otto Law Group, PLLC


                                       31