I'm glad to see this work wasn't abandoned! I liked the new chapter, I can definitely see a jump in improvement in writing and coding, like being able to spend more one-on-one time with the ROs and having more dialogue choices.
Since I know you intend to put in poly routes for some of the characters, I'm waiting until it's more finalized before I choose which ROs to go for since almost all of them interest me. Ciel, in particular, is my favorite; I like the struggle she's having in choosing between her duty as a soldier and her affections for the MC.
I do have one point of criticism. Is the MC's lack of control of their anger a primary point in the story? I only ask because while Chapter 3 has shown more choices in what the MC can say, it doesn't really prelude to any personality that could possibly be shown in text; more so just serves the romance aspect of the IF but not the story. Any time the personality of the MC is shown, it feels like it's just used as a tool to move the story forward rather than it being a consequence of our choices. If the MC's impulsive behavior is an important driving point in the story, then I completely understand. It's your story and if that kind of personality is needed to move the story along, or even maybe to serve some a coming-of-age plot, then I'll still happily read the rest of the IF like that.
I only point it out because it seems like there's so much focus on how the ROs are presented that there's not much thought on how the MC is presented. It feels less like a playable character and more like reading a self insert of a fanfic since I can't control how the MC behaves in situations. I don't mean for this to discourage you, even with this flaw, I do still enjoy the IF and would want to read more; I just hope to reflect back to you on what could be improved.
I hope you keep up the good work and can't wait to see where you drive the story! 💜