epilogue, postscript
跋 centers on the idea of a concluding addition to a written work: an epilogue or postscript that follows the main text.
跋 combines 足 (foot) with 犮, which likely contributes the sound. The original meaning relates to treading or stepping, but the modern Japanese use for epilogue/postscript is a semantic extension possibly from the idea of a final step or addition.
The left side 足 means foot, and the right side 犮 looks like a person stepping forward. Imagine writing a final footnote at the end of a book, as if taking one last step before closing it.
For ハツ, picture a writer adding a postscript to a manuscript and exclaiming 'Hats off!' as they finish: Hats -> ハツ.
rampancy; prevalence; domination
being rampant; (evildoers) roaming at will
epilogue; postscript; envoi
evildoers being rampant and roaming at will
afterword; epilogue; postscript
wandering
rope weapon with a sickle on one end and a ring on the other
being rampant; domination