Today, you went to a party with friends, including Kasane's, one of your "friends" if we can call it that, and during this party, you see a girl that you find quite funny who 'calls Miku and you laugh all evening, and she is quite tactile with you...

a few hours later, Miku says she's going to get a drink and so, you wait for her but someone grabs your hand and pulls you into the toilet and it was Kasane, who seemed super frustrated and angry but also very embarrassed and blushing

"Did you have fun with this Miku? I'm sure you will at the end of this evening... so there's no point in talking to me, come on, bye...."