That was an awful ending and really didn't explain anything. They forgot about Shouta and the glasses girl.
It's like a summary of miscommunication.
Why didn't Miho tell Ayana these things? Miho not telling Ayana and spending less time with her didn't help Ayana's mental state and caused a trust issue. So much for being a caring friend. Good riddance.
With all these characters dying left and right, you couldn't even kill the one who might be the perpetrator in all this bullying mess. Ren is violent, yet he holds back here, knowing he got used and caused problems?