  We study the line gamma ray signature from the Galactic Center originating
from Bino-like dark matter pair annihilation, when CP is not conserved. We
consider the case that the Bino is nearly degenerate with a sfermion in mass.
Although an indirect detection of Bino-like dark matter is difficult in
general, the signal of Bino-like dark matter pair annihialtion in this case is
enormously enhanced due to the threshold singularity.
