As long as the protagonist is female, anything goes: a White Bone Demon, a scorpion demon, a rat demon, a peacock demon, any female monster you can think of. At one point, the protagonist has sex with the White Bone Demon for over a month, even bringing out her original form, and keeps going! Later, he ends up in the Zeus universe and doesn't spare a single woman connected to Zeus, from Zeus's mother down to descendants of who-knows-how-many generations. The craziest part is that when a tree becomes a spirit, he has sex with the tree spirit. The author even stresses that while she talks with the protagonist, her actual tree form is also doing something or other. The protagonist even has sex with a sea spirit after the ocean becomes sentient, and with the Heavenly Way too. In the end, he even gets with the System. I was honestly stunned.
