Neko? (Ereri,Riren)

I don't own any of the Attack on Titian characters or any of the artwork I use for this.Also this is my first story so sorry if it sucks~(•w•)~

Levi is just having a normal lunch with Hanji and Erwin, but when he takes a sip of his drink Hanji starts snickering. he asks Hanji what's wrong but before she can answer he passes out. How does a relationship form out of this?