@elevown @Bugpope Well, keep in mind, LWA is set in England and Akko's from Japan, meaning Akko had to learn English before she went to Luna Nova, meaning she's not a native speaker. In this comic, she probably just didn't really understand what Diana was getting at because she was talking really complicatedly and became shocked to the point of slipping back to her native language when she realized what Diana meant.
Also, as cute as this is, I hope there's a follow-up to this comic because this is based on Darcy's FIRST love confession, which, if you've read Pride & Prejudice, is actually a pretty douche-y love confession. Actually, come to think of it, Diana's already saying some pretty dang jerk-y things in this comic.