Frisk used to hate school. She had used to be bullied by her classmates for her having no parents. She grew up in an orphanage, but,it wasn't until that her adventure in the Undergrounds that changed her life. Toriel and Sans had adopted Frisk as their own daughter(with the help of Asgore and Muffett. ). Since Toriel and Asgoren agreed that's how they moved forward.
Frisk and Monster Kid both had walked through the school hallways and stopped at the door of their classroom. Frisk was the first one to knock onto the door, but the first one who had open the door was Toriel, showing that she is was teaching Frisk's class.
"Oh, there you are! Frisk and Monster Kid come on and take your seats.",urged Toriel
"Awesome ! come on Frisk ,let's go!", pleaded Monster From inside the classroom while as Frisk head inside the classroom with him as well so as Frisk had head inside of the classroom she could see that the classroom is filled with human students and monster students and seeing this have made Frisk smiled
"Today is a new day.",said Frisk to herself.