I'm sorry for the late answer, and I hope this helps you:
Chapter 1:
- Continue the chase
- Wait a bit longer.
- Retreat.
- ...tell him the way
- Turn back
- That's all.
- Look at Sin/Look at Lagi (It doesn't matter.)
- Return by the backway
- Attack
Chapter 2:
- Go help Tsurugi and Nova
- Shrug your shoulders
- Take another cookie
- Offer to talk to Sin
- Leave
- Tell them they're easy to spot
- Don't follow him
- Let them escape and help Victoria
- You're a fine one to talk.
- It's not the best idea to disturb him now.
Chapter 3:
- Leave
- Hiryuu is...
- Leave them alone
- It's impossible.
- ... tiresome.
- One vs Two
- Stay quiet
- Sorry, I forgot about you.
- Go find someone. (Important Choice! It defines what route you end up on greatly.)
Chapter 4 (Common, Fraser, Osamu):
- It suits you.
- Stay quiet
- I should be wary of him.
- But I feel a bit curious.
- They were both good
- The three troublemakers were aware
- I'll keep an eye on him
- I didn't.
- I'll take care of this.
- Miss Taira has misunderstood Osamu.
- Three troublemakers (Important Choice!)
This list should include all the choices in Chapters 1-4 that are best to be chosen to get on Fraser's route.
If it's still not working, calmly contact me and we will figure something out :)