This story is based on DZ2's Forget-Me-Not Challenge, so here's the rules.

FORGET-ME-NOT CHALLENGE

Plot: During one of his many death-defying adventures, Harry suffers an accident and, when he awakens he either:

A: Loses his memory completely with NO CHANCE of getting it back

OR

B: Can't remember who he is, but does eventually remember

Rules:

If challenge A, Harry CANNOT recall anything after July 31st of his first year at Hogwarts or, failing that, can't remember who he is!

If challenge B, Harry must regain his memory through flashbacks and snippets of memory

Severitus

Must be set any year before - but not including - 5th Year

Grey or Dark Harry

Pairings must be H/Hr, HP/LL, HP/DG or HP/DM

Harry must sever ties with Ron and see him for what he is: a greedy, waste of space.

Even if she does not become his paired person, Hermione MUST remain Harry's friend

Harry must not trust Dumbledore

Suggestions:

Harry siding with Tom

Harry becoming a Slytherin

Bindings on Harry's magic

Harry knowing about the Horcrux/prophecy

Severus reconciling with Sirius and Remus

Other Weasleys choosing to stick with Harry

Harry undergoing a full personality change

Forbidden:

Harry sticking with Dumbledore

Hermione going against Harry

The Golden Trio remaining together

Neville or Luna bashing

Light Harry

OTHER THAN THAT, IT IS COMPLETELY UP TO YOU!