Exhibit 24

                                POWER OF ATTORNEY

Know all by these presents that the undersigned, does hereby make, constitute
and appoint each of Roy Kuan and Catherine Kwok or any one of them, as a true
and lawful attorney-in-fact of the undersigned with full powers of substitution
and revocation, for and in the name, place and stead of the undersigned (in the
undersigned's individual capacity), to execute and deliver such forms that the
undersigned may be required to file with the U.S. Securities and Exchange
Commission as a result of the undersigned's ownership of or transactions in
securities of Generation Asia I Acquisition Limited (the "Company") (i)
pursuant to Section 16(a) of the Securities Exchange Act of 1934, as amended,
including without limitation, statements on Form 3, Form 4 and Form 5
(including any amendments thereto) and (ii) in connection with any applications
for EDGAR access codes, including without limitation the Form ID. The Power of
Attorney shall remain in full force and effect until the undersigned is no
longer required to file Forms 3, 4 and 5 with regard to his or her ownership of
or transactions in securities of Generation Asia I Acquisition Ltd, unless
earlier revoked in writing. The undersigned acknowledges that Roy Kuan and
Catherine Kwok are not assuming any of the undersigned's responsibilities to
comply with Section 16 of the Securities Exchange Act of 1934, as amended.


                                   By: /s/ Norimitsu Niwa
                                       -----------------------------
                                   Name: Norimitsu Niwa
                                        ----------------------------
Date: November 1, 2021