Board Thread:Questions and Answers/@comment-37449770-20181109233401/@comment-10429980-20181215172939

One notable limitation is that monsterization into high rank monsters generally can only happen if the human woman has special potential, the right nature, etc. for it, and if its done by. Such women are rare, and highly prized by lilim.

The nature of the woman can influence monsterization in other ways as well. For instance women can only become demons if they have the same ideology as demons, otherwise they become regular succubi. Likewise, the special succubus races the kunoichi and amazoness arose because of the unique culture of the women who were monsterized, said culture bieng so ingrained in the women that the succubi they became largely retained it and it caused their bodies to change from what is normal for a succubus.

For another example, dark mages are noted to look so human because their nature when they were human was already basically identical to a monster girl. So they don't change beyond becoming more powerful, beautiful, sexually-capable, etc.

One other limit is that even a lilim cannot change a human woman into a race of monster that was not originally a monster and still exists as non-monsterized individuals. So a lilim could change a woman into a dwarf or dark elf, as their females are entirely monster races now, but they cannot change a woman into a angel, elf or fairy, as non-monster individuals of them still exist. This is explained as them being races that are currently not fully linked with the Mamono Lord.