Mall Stories are Fun to Write

Senpai bumps into Cassette girl while on his morning walk. They meet up with Sarv, who's lonely and wants to go to the mall! What happens next? Read to find out! Or don't, up to you!
(I mention Ruv and Spirit in this story but they don't actually appear, also this isn't a ship fic it's a brotp but you can see it romantically if you wanna!)