I'll probably translate this later but to answer your question, Shuten is just being herself and Raikou didn't notice it was Shuten (Raikou only knows assassin Shuten and she thought caster Shuten was a magical girl. I haven't played the event so I can't give context on that).
You are--What are you eating?miss Magical Girl...?It's just kintsuba. Would you like to have some?
Taken from nagomi yoneya: "Flour and water are mixed and kneaded and rolled into a thin dough to wrap bean paste, which is then baked on both sides.
This type of confectionary is called “Kintsuba,” meaning “gold (kin) hand guard (tsuba)” because its shape and color resemble those of the hand guard on a Japanese sword."Ah, I'll pass.I don't particularly dislike sweets, but...right now I'd rather have some of this.
