i've been able to get romance scenes with rylan without interacting much with K. i think for some things it is necessary, like when choosing if you get a text (i think i dont actually really remember) from either blane or rylan and K. but for the most part, if you just choose rylan for basically everything, you're bound to go along their romance route ദ്ദി˙ ᴗ ˙ ) (and i do suggesting choosing rylan for everything because the exchanges between them and the MC in chapter 12 is genuinely so gut-wrenching in a good way)