  ASASSN-22ak is a transient discovered by the All-Sky Automated Survey for
Supernovae and by Gaia in 2022 January. Although this object had been in deep
quiescence at least for seven years before this outburst, it has been showing
relatively regular long (35-40 d) outbursts with intervals of 132-188 d after
the 2022 January outburst. This "waking up" phenomenon appears similar to the
very unusual (hydrogen-rich) WZ Sge star V3101 Cyg. Time-resolved photometry
during the 2023 outburst detected low-amplitude (0.05 mag) superhumps with a
period of 0.042876(3) d. ASASSN-22ak appears to be very similar to CRTS
J112253.3-111037, which is known to have a very low mass ratio and is
considered to be an object evolving close to AM CVn stars as inferred from the
low hydrogen and high helium content. ASASSN-22ak is likely yet another object
having an evolved core and strongly depleted hydrogen in the secondary. The
case of ASASSN-22ak strengthens the idea that a considerable fraction of AM CVn
stars are formed from evolved cataclysmic variables. Both ASASSN-22ak and V3101
Cyg before the initial outbursts were probably in dormant states with low
quiescent viscosity or low mass-transfer rates. The current "high" states of
ASASSN-22ak and V3101 Cyg may have been induced by radiation during the initial
outburst or these objects are simply returning to ordinary states, either in
terms of quiescent viscosity or mass-transfer rates. We also provide updated
superhump period and estimated mass ratio for CRTS J112253.3-111037.
