Problems with Ciel route (I'm playing Tsukihime 2000 with the translated version).

Hello, This is my first post here on this forum and I've never talked here before, so it's great seeing all you guys.

I'll get straight forward to the issue.
My problem is that while I've completed both arcueid endings perfectly, I'm struggling in the ciel route. I don't know how to stop tohno skihi from violating kohaku after roa has his will inside him. After getting a bad ending multiple times, I clicked "ciels lesson" and apparently it told me that was the problem. Any fixes? Thank you.

Ciel doesn't like you enough.

And I don't mean that as a meme. You have to pick more choices earlier on in the route that increase her opinion of you.

Alright, thanks.

I'll go back by a few if not several days and select more ciel options

By the way, what day would you recommend I should start from? (I can't find a precise one)

From the start, really. You can skip chapters you already read.

https://forums.fuwanovel.net/topic/983-tsukihime/

Thanks, I really appreciate it. I've been stuck for too long.