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We report on photometric observations of two dwarf novae, OT J075418.7+381225and OT J230425.8+062546, which underwent superoutburst in 2013 (OT J075418) andin 2011 (OT J230425). Their mean period of the superhump was 0.0722403(26) d(OT J074518) and 0.067317(35) d (OT J230425). These objects showed a very longgrowing stage of the superhump (stage A) and a large period decrease in stageA-B transition. The long stage A suggests slow evolution of the superhump dueto very small mass ratios of these objects. The decline rates during theplateau phase in the superoutburst of these objects were lower than those of SUUMa-type DNe with a similar superhump period. These properties were similar tothose of SSS J122221.7-311523, the best candidate for the period bouncer.Therefore, these two DNe are regarded as good candidates for the periodbouncer. We estimated the number density of period bouncers roughly from ourobservations in the recent five years. There is a possibility that these WZSge-type dwarf novae with unusual outburst properties can account for themissing population of the period bouncer expected from the evolutionaryscenario.

OT J075418.7+381225 and OT J230425.8+062546: Promising Candidates for the Period Bouncer