We consider a problem whether Kodaira's aa-lemma holds on weakly 1-complete
Kahler manifolds or not. This problem was proposed by S. Nakano. We prove
that the Lemma holds far some class of complex quasitori C-n/Gamma, and it
does not hold for the other class of them. Every complex quasi-tori is weak
ly 1-complete and complete Kahler. Then we get a negative answer for the ab
ove problem.