I really appreciate the scanlation team, I am super interested in this manga so thank you for bringing it to us!
I really feel like a lot of people who comment on this website do not take into consideration the age of the characters being depicted, oh well. Anyway I think Eri is very selfish, I guess I haven't seen any really redeeming qualities in her (or none have been shown so far) besides the fact that the fact that she's the MCs childhood best friend.