I'm actually pretty fond of Koto.
It's not like I hate her so being picky about her. Just can't turn back on what I have seen. I still like her more than Erika even though I see her as a control freak.
While Aya is like the girl out of my dream, my first love is Koto type of girl.
However, I am not even half clever or mature as Aya back then when I was a teenager.
We literally tortured each other.
That relationship is totally a disaster and not ends very well for both of us.
I'm similar as you. I see same things about Koto and I like her more than Erika. But I like past Koto better than Koto now (as personality).
I like Erika now better, than Erika in school.
And Aya...she has some elegance. I'm truly rooting for her to find her place after all what pushed her 7 years forward.
Anyway, I'm still reserved (about ships and all)
I'm prepared for unexpected twists.
About your relationship experience, don't worry. It happens to many, sooner or later. I also had some bad experiences. It's learning.
And, I have to tell that I did not point on you for talking about Koto.
I meant generally (more like Erika's fans became too passionate, ha ha)