the context of rape is a modern thing.. and it was not that in the first chapters.
the author did a decent job of showing the nerve wracking first night if a new bride, mind you, yes, the MC was excessively nervous, really thrown into this marriage out of nowhere almost overnight. mentally unprepared for sure. that seems rather normal. There are panels where he has come to terms with his role (thank goodness) and the ML was, dare I say, thoughtful towards him despite having a rigid personality.
*sigh* Just because sex is difficult, doesn't mean it's rape (speaking from experience).

This is so garbage lmfao I'm so tired of the troupe of MCs falling in love with their rapists who they were forces to be with. Why include rape at all? This was god awful the first few chapters and I haven't forgotten just because the dumb MC had a wet dream and gets all blushy. Art is pretty that's about it. But acting like it's all cute and fluffy after the first chapters... No.