Slow slip events (SSEs), quasi-static slipping modes lasting from days to months, occur episodically in the vicinity of the megathrust earthquake rupture area. After the 2011 Mw 9.1 Tohoku earthquake, the recurrence interval of Boso SSEs dropped from ~ 6 years in 1996 to ~ 2 years in 2011, followed by a recovery to 5.7 years by 2024 as estimated by GPS studies. We aim to model the influence of static stress transfer from the 2011 Mw 9.1 Tohoku earthquake slip on the Boso SSE recurrence interval change in the rate-and-state friction framework. The model parameters are optimized to be depth-dependent with along-strike heterogeneities, reproducing the unperturbed Boso SSE recurrence interval at ~ 5 years with moment magnitudes of Mw ~ 6.5. The Boso SSEs are simulated on several published non-planar fault geometry models constrained by data from land and ocean-bottom seismometers for the Philippine Sea plate; the fault geometries cause differences in rate-state friction parameter distribution and hence impact the SSE characteristics. For each fault geometry model, we compare modeled SSE features under stress perturbations sourced from 1) coseismic slip and 2) combined coseismic and afterslip of the Tohoku earthquake. We demonstrate the influence of the short-term afterslip (< 1 year) on the clock-advance of the first post-2011 SSE occurs 0.5 year after the earthquake, and the long-term afterslip ( up to 12 years) on the other post-2011 SSEs. We discuss the variations in stress change due to different coeismic slip and afterslip models, tectonic settings, and plate geometry.