This story is inspired by the "Harry Potter" series, with a 50% "possibility" of imaginative continuation.
What if James and Lily had a daughter.
If Voldemort thought "the one who defeated the Dark Lord" was Neville Longbottom.
If Snape hadn't joined the Order of the Phoenix as a spy.
If Voldemort hadn't been defeated on Halloween 1980.
If Sirius Black hadn't been imprisoned for killing thirteen people, Peter Pettigrew hadn't faked his own death to enter the Weasley family.
…
(This story is purely imaginary. If you think there is OOC, it may be because you and the author have different understandings. If you think the author will hack certain characters, the author will follow your thinking and clearly understand that every character has been "hacked" ×)
The main perspective is Petunia's daughter, Dalia Dursley, an ordinary Muggle witch.
Concept: Originating from the storm created by a butterfly's wings