Can I just fangirl over the fact that Eri wants to be Fuyuki's girlfriend?? Like this is awesome. Now for the people who say Eri doesn't seem to actually romantically love Fuyuki, that MAY be the case, but think about this: does it really matter? She loved Kyou for the moment he gave her utmost attention. Fuyuki WILL make Eri happy and Eri's existence was literally enough for Fuyuki to subsist off of. I think if they dated it would be incredibly wholesome and they'd both be very happy regardless of actual romantic interest.
Now, the only issue remaining is HOW will they even get together? Fuyuki declared that she'd given up on her love and the trip seemingly made her get very close with senpai. I'm not sure how Eri would manage to break Fuyuki and senpai up even. There is legitimately no reason for them to break up, and I think this is where we'll find out more about senpai.
I am so excited to see what this series has to offer I literally made an account just to talk on this forum. This is simply the best GL I've ever read. Thank you Shinoa you are my God.