I'm not sure how it works in this game so Ill go by the romance of OIAL. Unfortunately it seems that the writers believe as you level up romances that people want crazier and raunchier scenes. So it starts with innocent stuff and snowballs to 3somes and crazy rough sex. It's like that in VIRTUES and Nothing is Forever too. It got so bad in VIRTUES that I quit the game. As I'm not into hurting and insulting women. And the writer of the game never warned anyone that ALL the romances in the game end up like that. In OIAL it culminated more with a harem ending. All the girls love the MC and they are all one day just bisexual and okay with kissing each other and making sure the MC is pleased. Likely this game will be the same. Nothing offensive, just much more complex kinky stuff. I would be more than happy with just regular vanilla romances and some cowgirl and sweet pillow talk. But they likely need to appeal to the rest of the people who often want things to end up as kinky as possible.
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I don't really need too many kinky scenes with Luna personally. I like her as she is too. Sometimes more kink doesn't fit the character. I'd never hypersexualize most characters from FMA for example.