->Says she feels the same way as Rin (meaning she liked Kazuto even if his name wasn't mentioned)
->Had a conversation over tennis about Kazuto (where Rin even screamed for her to try and steal him from her)
->Somehow was lesbian all along
->????
->Profit?
@Miliam Yukari made a promise to live forever with yuyuko (that's the memories she refers to when she says "the one still bound by those memories is me"), I think it has to do with how ghosts form from having unfinished business or are still atached to something and once they take care of that...