My thoughts…
He may be a reincarnation and that’s why he’s drawn to the house. It may also explain why the church is so cruel if Dietrich is an exact copy of someone/in the same line of someone who excommunicates with the church.
My thoughts:
What if all those memories really happened and it happened centuries ago. Which would explain the old clothing, building style, etc...
We also know that her "brother" Johannnes has been obsessed with her since meeting her as a child. We see him ruin all of her love interest and how and we also see him steal Eric's body just to kill the painter (again) and the ml. And make her rely on him and choose him. (P.S I think his the true evil at the end of all this)
My theory is that centuries ago she did live a life with the ml after escaping her Johann/Her father and had a child(Noah, imo very obviously her kid). BUT her brother eventually found her and trapped her and him in the mansion forever using dark magic.
We already saw how he had the church in his hand when he accused the painter of blasphemy and got him executed. Who's to say that he doesn't have a powerful priestess to curse Noah and trap their souls in the mansion for her to watch her lover die failing to save her.
This current run is another reincarnation of ml to try and save her. As for the dairy I think it was written by one of her one of her maids as a way to document watching her grow up and her daily troubles. And like was said before this mansion is the embodiment of her nightmares. It's her own personal hell.
Your mind… it’s huge
You may be on to something. She did say in the beginning that there HAVE been 99 attempts so far, maybe that's 99 years?
What if.... What if the ml isn't saying bullshit, and his memories really happened. That'd match with the diaries. But here's the problems then: how did the house get cursed? Where is everyone within the house? If it's true why did The ml forget until now ?
Because even if we can feel the match with the dairy Story, there's few problems with the start and the context with the story I'd say..... Or maybe is it for his relationship with the lady that Dietrich was hated by his camarades and superiors ? It's actually possible..
But let's also tak about noah who look like it's their kids, if he really is I'd feel sooooo bad... Poor kid
Woaaaah I like this sotryyyyyyy , I wish that it's stays coherent, and doesn't rush towards the ending