Too young, too fragile (Klaus Mikaelson ff)

Young Niklaus gets sick with a terminal illness, Elijah and the family is there for him to help. He goes on a long journey of challenges and discoveries. Hope by his side all the way bringing refreshing joy to the dull days.

Whump fic about our favorit 1000 year old vampire as a 17 year old human dad navigating fatherhood while being ill.

Set in an alternate universe
Contains mention of rape