One creative interpretation could be that the Unbreakable Vow is used in a fanfic to bind two characters in a secret alliance against a new dark force. For example, two students from different houses might make the vow to protect a powerful magical artifact from being stolen by a group of dark wizards who are trying to use it to gain control over Hogwarts.
In the original series, the Unbreakable Vow is a very serious and rarely used magical bond. In fanfic, it can be more common. For instance, in fanfic authors might use it more often to drive the plot forward. They might have characters enter into the vow more casually (compared to the original where it was a big deal).
Trust makes a love unbreakable. In a love unbreakable story, the couple trusts each other completely. They don't doubt each other's actions or words. For example, if one has to work late with a colleague of the opposite sex, the other doesn't suspect any foul play.
The definition of unbreakable was that it was firm and tight and could not be destroyed or taken apart. This idiom could also be used to describe a person's firm will or stubborn attitude that could not be shaken. Unbreakable meant that it was exceptionally strong and indestructible. It meant that it was unshakable. It came from Han Yu's 'Stele of the West of the Huai River' in the Tang Dynasty.
Yes, unbreakable was an idiom. It means firm and tight, unable to be destroyed or taken apart. It could also be used to describe a person's firm will or stubborn attitude that could not be shaken. This idiom came from Han Yu's Stele of the West of the Huai River in the Tang Dynasty.
Sure was. Unbreakable started as a comic and then was adapted into other forms. The comic had a dedicated fan base due to its compelling plot and art style.