Is there any walkthrough? Also, I don't know if the hair growing transparent at some points is a glitch or intentional?
No walkthrough yet, though I will add some soon for some of the stuff people are having issues with~
As far as routes and LI's are concerned, though, you needn't worry. There's no right/wrong choice when it comes to LI's (save one very specific one regarding Vadeyn) thus feel free to play your character however you please if your primary concern is getting a LI route.
https://underbliss.tumblr.com/post/189195570552/ebon-light-walkthrough
Here's the walkthrough :) It'll be updated more as needed!