Talk:Aya Ayano/@comment-91.47.8.184-20150205131139/@comment-397235-20150408002518

Well, Atsuji and Aya's deaths happened on the same day, and that was just a little before the class trip (which is why Yumi is still visibly bummed out and withdrawn; it's not aided by one of her other three friends being dead and the third also being upset about that).

Cars don't just explode unless something happens to the gas tank, and even then, the odds are incredibly long.

I think Yumi at least makes the assumption the Ayanos were leaving, Aya promised to call her, and then never did, and it's pretty safe to imagine it's not because she has better things to do. Those two seemed to be pretty close; I don't think Yumi would imagine Aya would deliberately abandon her like that.