The Obscurial Snake in The Care of A Magizoologist

The young, abused, manipulated Boy-Who-Lived finds himself back to his first use of accidental magic. But he’s not really there yet, without access to his memories he instead possesses a strong dislike/denial toward magic for unknown reasons which results in him suppressing his magic. Later ‘believed’ to have been in the wrong place at the wrong time, an eleven-year-old Harry and Hermione, near the end of their first year at Hogwarts, find themselves transported nearly seventy years in the past with the memories Harry once forgot and a humorous Obscurus coming along for the ride. Saved in the wilds of Africa after being captured by poachers, whilst stuck in their animagus form, by a curious magizoologist, the 75% Slytherin, 20% Ravenclaw and 5% Gryffindor Master of Death Harry Potter and his 70% Ravenclaw, 20% Hufflepuff, 10% Gryffindor Friend Hermione find themselves in the care of an enthusiastic creature lover.

Or

Harry James Potter, that’s the name of the Boy-Who-Lived, the perfect Gryffindor, the Savior. Hadrien Orion Sirius Black, that is the name of the Heir of Black, the secret Syltherin, the Master of Death, and future Dark Lord. Together with his equally clever and genius, Ravenclaw friend Hermione Granger, they travel back to the past to help Lady Magic with a troublesome Dark Lord that led the Magic Generation in the wrong direction.

Credence/Harry, semi Hermione/Newt/Harry, Hermione/Grindelwald