  I will talk on my recent works. Axino, related to the SUSY transformation of
axion, can mix with Goldstino in principle. In this short talk, I would like to
explain what is the axino mass and its plausible mass range. The axino mass is
known to have a hierarchical mass structure depending on accidental symmetries.
With only one axino, if G_A=0 where G=K+ 2ln|W|, we obtain axino mass=
gravitino mass. For G_A nonzero, the axino mass depends on the details of the
Kaehler potential. I also comment on the usefulness of a new parametrization of
the CKM matrix.
