This might sound strange, chica, but a Slime demon taught us how to establish a contact with demons.
[He then goes off for a while about demonic contacts and how demons have emotions and depending on what you do, they might get angry, happy, interested or scared, it's a good time and lots of talking is involved.]
[video]
[He then goes off for a while about demonic contacts and how demons have emotions and depending on what you do, they might get angry, happy, interested or scared, it's a good time and lots of talking is involved.]