Truth is i was wrong by not including Seraph betwen captured slaves by slavers in mountains (forgot about them there), but i wasnt wrong about you cant meet this race as free
term "monster girl" for event alvays means race is unciivilized if captured, seraph is not monster race
Lamia, Fairy, Harpy, Dryad, Nereid, Arachna, Scylla, Slime are only races who can be "monster girl/boi" event