Hello guys!
Whatever It Takes also has a sequel called Light of Mine, which takes place 4 years after the events of this story. It delves further into Severus and Harry's father/son-like bond, which has a lot of family fluff as well.
However, it is also a Severus x OC story, so because of the nature of that content, it will not be purely severitus, hence not appropriate for this website.
My AO3 is SanctuaryAngel, so you can find the story there. It is a current WIP, with CH 44 on its way. The story has a much bigger arc, but you will see Severus dive into certain parts of his life with complete unfamiliarity and new obstacles, but this time with Harry by his side throughout.
Hope to see you there! x
Sequel: Light of Mine
The End.