A Dog Whistle

When Mikan got back to her room, the first thing she did was check what was in the box, her curiosity was killing her. When she opened it, she was surprised to see it was a dog whistle. Inspecting it, Mikan only saw that it was a perfectly normal dog whistle with nothing special to it. Not sure how this would help her deal with Hiyoko's bullying and still curious as before, Mikan decided to blow into it.

After a minute or two of waiting, wondering what exactly the dog whistle did, Mikan heard a knock at her door. Quickly getting, nearly tripping from how fast she got up, Mikan made her way to dorm room door and opened. And to her surprise, she saw Mukuro standing outside it.

Mikan: Mukuro, what are you doing here?

Mukuro: Junko explained the situation to me and she's allowing you to borrow me for the time being.

Mikan was a bit weirded out by the fact that Mukuro is some how summoned by a dog whistle of all things and also what she meant by borrow. Weren't Junko and her meant to be sisters?

Mikan: Um, Junko promised me a way to deal with Hiyoko's bullying?

Mukuro: Okay, do you want me deal with her right now?

Mikan: Deal with? You aren't going to hurt her are you?

Mukuro: Of course not. Junko instructed me that you'd like this to be as painless as possible.

Mikan: Oh

Mukuro: So you want to do this now?

Mikan: But its late

Mukuro: All the better. Meet me outside Hiyoko's room in an hour

And with that, Mukuro immediately left Mikan's room, leaving Mikan standing there confused.