Harry Potter: Gryffindor's Heir of Slytherin

[Hermione is the sole female lead + no transmigration + no System + follows the original story]

A soulmate is a companion of the soul.

Those who are soulmates from birth will meet one day, no matter how far apart they are. From the moment they meet, their souls will slowly come to sense everything about each other. They cannot hurt or kill one another... This is fate, and Merlin's gift.

(The author is terrible at writing blurbs and coming up with titles, but this passage is somewhat related to the story. Please head to the main text for more. Thanks for your support!!!)