Eyrin as a plot device is not going anywhere. MC heartbroken over Eyrin being with Ethan is how the game started.
NOw we are literally back to that plot line, after we have been going back to it over and over:
MC leaves her flat, Ethan goes inside. MC cannot get a hold of Eyrin, Ethan is with her in a coffee shop chatting.
How many hints does a dude need before he realizes he is being played?
At this time in the game, MC is thinking to himself : what is the point?
She ends up with ethan on every path.
Make up your mind, woman! MC or Ethan! So far, purely on 1 vs 1 , Ethan has been winning big time.
Ethan treating Eyrin as a meat sleeve for his boner is panfully obvious, yet she is still thinking of resisting him.
She has this flair of getting MC into shitty situations, then shuts off on him about no reasons,
then wants to be alone, just up until her next ethan meeting.