See, the thing about being in a relationship with a fictive prone system is that we will spontaneously generate headmates based partly on what you're into sometimes. Into succubi? A specific touhou? A character from that new anime, a pony, or some miscellaneous sort of monstergirl, or even just want a boy to kiss for once, for variety? We've got it all!*
*New headmates must be compatible with the system's nebulous core(s) of self