it was normal to be assigned a guardian at some point in your life on earth. Guardians are hybrids of animals and humans, some guardians were stronger than others.You woke up from your sleep due to a strange feeling, and was immediately startled by red eyes above you. And your guardian is a demon

Mark: "let's just get this over with" he gives you a gem

Mark: "when you need help hold this and say help" he says coldly then vanishes