
So who is byul again ?

All of the gods made Kalied together but lost control of him. It appears that he doesn't have any recollection of his past though and his powers are currently slumbering. Since they lost control of him, they created Byul (Rinrin) as a way to counter Del and keep him in check however she also doesn't remember their past together. At least that's what I got out of the story so far. The gods/spirits mentioned that even before, Byul was in love with Del.

Is ch 7.5 only like ‘special chap’ it’s not actually the story right? (Student teacher)

I mean is that part of the story? He didn’t actually go to school after losing his memories, right? That's why I asked if that was just a bonus chap with a different story, like the author gave us some story with ”this is what would the story be if they are student and teacher” (*⁰▿⁰*) sorry bad English!!! My eng is limited:( if you don't understand me you don't have to reply..
I don’t know how am I supposed to feel after knowing that ending. I really wish Ryuu would ended up with Koharu only since koharu is the whole reason Ryuu become like this, and it’s so disappointing when Ryuu said Koharu isn’t enough if Yuzu leaves, also i hate madoka :(
can you tell me the spoilers pls