Of course!! ❤️❤️❤️ Thank you so much for playing!! 😍🙌🙌🙌
Spoiler ⬇️
It does have to be at least your 3rd "new" playthrough, so 1 playthrough after you have Agreed to the Plan in the previous playthrough -- once you've Agreed to the Plan and start a new playthrough, you'll be able to Romance Sage (and also not romance him -- which is End 10. You should definitely utilize the "skip" function to skip over anything you've already seen!)
The important thing is when he asks if you'll tether to him (and it shows the sketchy CG) you gotta say "I'm not sure"/No so that you don't get the romance ending!
Then assuming you've handled Yasha so that you get to the final confrontation, you would just stall and shout for Sage! 🫡
He will come save you but no romance!