Recently you've ended up in the SBI household and it's honestly the best thing that ever could've happened to you. They're demon hybrids just like you and probably know more about you then you do yourself. You're still figuring out how to tell who has what sin based on horn shape and colours and stuff like that.
Their a strange and funny little ragtag family each with their own stories but they clearly all love eachother alot and are grateful to have found one another especially considering how few in numbers demon hybrids are after they were purged by a religious group a few centuries ago. You weren't alive to see it but your pretty sure Techno and Phil were, maybe Wilbur to. You don't know it's a sore subject for most demon hybrids and best not to bring it up, sort of a taboo. Even humans who are okay with hybrids including demon hybrids like yourself and mob hybrids don't really like to acknowledge what happened. Theirs still alot of hostility towards hybrids who originate from a hostile creature.
You refocus your train of thought on the notebook your holding. After the purge demon hybrids rightfully do not trust humans at all and keep all their knowledge hidden and just between other demon hybrids so it can not be abused again. Your just looking through Philzas notebook, it's a throwaway one he'll burn after your done looking through reading about demon hybrids so no information gets out.
You're amused looking at the poorly done drawing of Techno, beside the drawing it says wrath which is of course his corresponding sin or main sin. It has little arrows showing how that particular sin changes ones appearance blah blah blah, set of four horns rather then two, horns are pointy and can jab someone, extra strength, blood lust. All that good stuff. You flip the page to Philza, he's Envy so he's possessive, doesn't like others having what he sees as his, his tail is longer, he has sharp eyes, his horns are shorter chunkier so he can effectively push someone back. Wilbur's pride, he all around has a higher standards for his appearance and always looks at himself in a mirror when passing, horns are twisty like a rams typically more interesting to look at, and a loud powerful voice, then Tommy, he's greed, he's got a got claws, his horns are short but like Technos go mostly up and are pointy, Tommy's are just a bit more curved though, and he's naturally quiet on his feet like a cat.
You close the book with a sigh. While we are stronger then humans are instincts are our disadvantage, our sins which are part of us are our flaws and can control us or make us act irrationally. You feel bad for Techno in particular, wrath is rough and you overheard late at night when passing Technos room him and Philza talking about some voices he hears demanding blood or something, you haven't brought it up of course.