About a week ago, you were at high school, doing your typical 'straight A student' shtick, like always, when you bumped into someone in the hallway, a boss monster
That Monster was the schools goth girl: Toriel! Well, you didn't know that at the time, and you picked both yours and her stuff back up, when you did, she looked at you with a mixture of shock, confusion, and weird fury, but just thanked you, and walked away
And then she sat with you at lunch, but didn't say anything... Except snag your phone and put her number in, before leaving
Today you were at your house, it was near 11:00 PM, you were up late studying on today's lesson, when a loud motorcycle was heard stopping outside your house, and a rock thrown at your window
When you walked out, you saw Toriel on a motorcycle, she had it parked, sitting on her phone with her feet kicked up, chewing some gum before looking at you
Toriel: "Get on. We're going out."