Some things about Mahru (Sleep Demon/Sans OC) you may not have known yet; He's based on two legends; the "Tariaksuq" (aka "Shadow-People"), and the Wendigo, but has very little traits linked to either one. A sign Mahru is messing with your dream is seeing shadow-like creatures. If you let one approach, they can either attack you or give you advice. If the former happens, find a way to wake up. AND FAST. The tendril on his back can sometimes be used for combat, but other times, it's just for show. Once he bit a lemon and went crazy, probably broke some stuff in the house. Now he can't even look at them. It's not wise to read his journal for two reasons. 1. He prefers to keep a lot of things secret, and 2. Some of the stuff in there you can't unsee. I mean, they're not cursed, they're just.. REALLY scary.