I love how the dialogue choices don't reveal everything that you're going to say! Sometimes I get really surprised at how savage the character gets after I choose an option. I think that's really fun and is a good way to flesh out his personality and let Karenin keep surprising the player, which gives it an extra element that makes the gameplay more interesting. I think characterization was super well done in this game. I really enjoyed all of the drama and the choices varied a lot, and felt pretty monumental when I made them, which made me really invested in the end result.
Sometimes the links at the end of lines feel a little bit excessive. If the passage is already pretty short I don't think you need too many in one passage.
Also a heads up: there are a bunch of errors in the coding which are visible when you play through the game. Please take a look at that!