It must be Ichihime since she ate so much.

[player]I think I know what happened. Here's 5,000 coppers. [Owner]That's really nice of you. Speaking of which, are you here for the Priestess? [player]Yes. Did she say where she was going after she finished eating here? [Owner]Not really, but my waiter said she was heading toward Asaha High School. [player]About what time did she leave? [Owner]Hmm… 4 hours ago, maybe. That, that's impressive. She managed to eat so much in less than an hour! I ran to Asaha High School immediately after leaving the shop... Outside Asaha High School I met Nana Shiraishi at the entrance of Asaha High School. She seemed to be waiting for someone. [player]Shira… Before I was able to greet her, Nana Shiraishi rushed to me and patted my shoulder enthusiastically. [Nana Shiraishi]Yo, junior! Perfect timing. I was just about to look for you. I felt a crushing pain on my shoulder, so I took a few steps back to avoid her hand. [player]What can I do for you? [Nana Shiraishi]You know that little cat? She came to me today! To--tally unexpected. Little cat? She probably meant Ichihime. But Ichihime never had much interest in her. That was unexpected indeed. [player]What did she want from you? [Nana Shiraishi]She borrowed 5,000 coppers from me, said you would pay me back later, then ran away. Are you guys planning something? [player]5,000 coppers again!!! [Nana Shiraishi]Again? Did she also borrow from others?! Oh no, I thought she was finally taking me as a close friend. Guess I was just one of the many people she borrowed from… [player]You're missing the point! Don't make yourself sound so bitter! Wait, did she ask me to pay for Ichihime? [Nana Shiraishi]Hey junior, you are not going to run away without paying me, are you?