  We propose a leptogenesis scenario where baryon asymmetry generation is
assisted by the kinetic motion of the majoron, $J$, in the process of
lepton-number violating inverse decays of a right-handed neutrino, $N$. We
investigate two distinct scenarios depending on the sources of majoron kinetic
motion: 1) the misalignment mechanism, and 2) the kinetic misalignment
mechanism. The former case can naturally generate the observed baryon asymmetry
for the majoron mass $m_J \gtrsim \,{\rm TeV}$ and the right-handed neutrino's
mass $M_{N} \gtrsim 10^{11}\,{\rm GeV}$. However, an additional decay channel
of the majoron is required to avoid the overclosure problem of the majoron
oscillation. The later scenario works successfully for $m_J \lesssim 100\,{\rm
keV}$, and $M_{N} \lesssim 10^9\,{\rm GeV}$ while $M_N$ can be even far below
the temperature of the electroweak phase transition as long as sufficiently
large kinetic misalignment is provided. We also find that a sub-$100\,{\rm
keV}$ majoron is a viable candidate for dark matter.
