Aiko Tachibani. Terrible home life and just so happens to be soulmates with Manjiro Sano.
So. I'd like to point out I only write when I'm bored! I'm not really good at...
Enemies to lovers.
Tr hates Bsd but can't get him out of his head. It's starting to drive him crazy, so he writes about it in a notebook.
But...
He ends up leaving that...