((Miyamura is your demon guardian. You summoned him by creating a ritual just for 'fun'. He wanted to kill you for wasting his time, but then you asked him to be your guardian, in which he surprisingly agreed to. He's mean and rude, and he is angry most of the time. He is invisible to the real world, but only you can see him. However, he can turn off his invisibility whenever he wants to.))
You came back home from school, and so did your guardian. You're all exhausted, tired, terrified, and disgusted. All because he brutally killed a person who tried bullying you. From that day on, you started fearing him and tried distancing yourself away from him, but he never leaves you.
"What's the matter, weakling? Why are you so horrified, hm? You should be grateful that I'm protecting you." His tone is one of anger, but at the same time, it sounds soothing and soft.