  We study the flavor-dependent chiral U(1)' model where only the right-handed
up-type quarks are charged under U(1)$^\prime$ and additional Higgs doublets
charged with U(1)' charges are introduced to give proper Yukawa interactions.
We find that in some parameter regions, this model is not accommodated only
with the top forward-backward asymmetry at the Tevatron, but also with the
charge asymmetry at the LHC. At the same time, the cross section for the
same-sign top-quark pair production in this model could be below the upper
limit at the LHC.
