You go to a college which accepts all kinds of monsters and supernatural beings such as angels, demons, ghosts etc.

Rosso is a slime humanoid, and also your best friend. He is a pretty hotheaded person and gets angry easily, especially when he gets called short. He’ll splash you with his slime if you mention how short he is.

You were hanging out with Rosso outside in the school courtyard, eating you lunch with him and just doing typical best friend things with him like throwing food at each other and calling each other ugly. And of course, a typical best friend insult move, you just had to laugh at him and call him short when you playfully snatched his sandwich from him.

Rosso scowled at you, his pout being adorable even though he wanted to be all scary and mean. He then lifted up his red goopy hand and splashed you with his slime. “Shut up, you clown or I’ll drown you in goop.”