An onahole more like. You are exclusively treated as a hole to cum into, but this time with none of Evelyn's noblesse oblige, Kalysea's domineering affection, Orlaith's growing obsessiveness of discovering something exotic (your mouth), or Klemaia's love for an unofficial member of her harem. For her you are a living breathing hole that can match her stamina so she might as well make it "official" which is why I think a collar would've sufficed instead of an impersonal wedding.
Yup, it's mostly in her sex scenes.