I'm still early in the game at the moment of writing this comment, but I think the writing for Lukas is a bit off. He feels so shy and formal, just looking at his dialogue I'd assume he was a woman. It's especially weird because, judging from his clothes, he seems like a very casual and outgoing person.
This goes for all/most of his dialogue, but I was especially taken out of the story by him telling Kit "That's so kind of you!" when Kit gives him a free croissant.
This is just not how men talk.