  We revisit the consistency of torus partition functions in (1+1)$d$ fermionic
conformal field theories, combining traditional ingredients of modular
invariance/covariance with a modernized understanding of
bosonization/fermionization dualities. Various lessons can be learned by simply
examining the oft-ignored Ramond sector. For several extremal/kinky modular
functions in the bootstrap literature, we can either rule out or identify the
underlying theory. We also revisit the ${\cal N} = 1$ Maloney-Witten partition
function by calculating the spectrum in the Ramond sector, and further
extending it to include the modular sum of seed Ramond characters. Finally, we
perform the full ${\cal N} = 1$ RNS modular bootstrap and obtain new universal
results on the existence of relevant deformations preserving different amounts
of supersymmetry.
