Help this hag to understand the story 😔

Well the black haired dude like to bury people but he was trying to hide that and the blonde dude like to soil/be buried and got the black haired dude to bring out his weird urges. In conclusion they’re both weird as fuck. ( old man kind of brought them together?)

I understood this part. I am lost with their crazy family lore :/
Thank you for your comment!