The CAMIRA richness and mass scaling relation. The black circles denote the overlapped 66 clusters. The orange solid and magenta dotted lines are the best-fit scaling relations concerning the WL and true masses, respectively. The orange region is the 1σ uncertainty of the scaling relation with the WL masses. The blue solid line and region are the best-fit and 1σ uncertainty with the eRASS1 richness (Fig. 7), respectively.