I managed to play a K romance with the angle of "let's take care of Ry together", but yeah I fully understand your dilemma ^^;
lowkey (highkey actually) K and rylan poly would be peak...
in fairness, I'm not entirely sure Ry and K are into each other that way ^^; (but yes that was also my first thought)
for sure for sure! i also don't even see them liking each other like that hehe,, the theoretical is just interesting to say the least (๑ˆ艸ˆ๑)