Most fanfictions that focus on Ron and Hermione tend to center around their emotional connection, friendship, and the development of their romantic relationship in a more tasteful and respectful manner. A scenario like 'Ron kisses Hermione in her bra' goes against the general spirit of the original Harry Potter series which emphasizes values like friendship, loyalty, and love in a more innocent sense.
There may be some very niche or inappropriate fan - created works out there that might have such a scene, but it's not something that is in line with the mainstream and positive interpretations of the Ron - Hermione relationship. It's better to look for fanfictions that stay true to the essence of the characters and the series as a whole.
He might crack a joke. Ron has a knack for using humor in tough situations. Something silly to make her laugh and forget her troubles for a moment.
One possible plotline could be a situation where Hermione loses her bra during an adventure with Ron and there's some comical or awkward moments as they try to deal with it without others noticing. Another could be that Ron accidentally sees Hermione's bra and it causes some blushing and confusion between them as they realize their growing feelings for each other in a new light.
There's also 'The Unspoken Attraction' which focuses on Hermione's internal struggle with her feelings for Ron. It's a slow - burn story that makes the moment when Ron finally kisses Hermione all the more satisfying. The story delves deep into their characters and how they've changed since the early days at Hogwarts.
There might be some kind of misunderstanding. For example, Ron could have been misinformed about Hermione's actions. He thought she betrayed him in some way, like sharing Gryffindor's secrets with Slytherins, so he lashes out at her.
I'm not aware of any specific 'Ron and Hermione bra fanfiction' as it's a rather unusual and not very common theme. However, you can try searching on fanfiction websites like FanFiction.net or Archive of Our Own. Use the search terms 'Ron and Hermione' and see if any stories come up that might have a plot related to what you're looking for.
Another possibility is that she had an argument with a friend. It might not even be Ron. It could be with Harry or another Gryffindor. She's very sensitive about her friendships and any conflict could make her cry.
Another reason is that fans are often passionate about the idea of Ron and Hermione as a couple. Writing fanfiction about their kisses and relationship is a way to celebrate that couple. It gives them a chance to delve deeper into the emotions and interactions between the two characters, exploring things like how Ron might be nervous before kissing Hermione or how Hermione's logical mind reacts to the sudden rush of emotions during the kiss.
Hermione could also distance herself from her parents a bit. If they are too stubborn in their hatred, she might choose to be with Ron regardless and limit her interactions with her parents until they come around. After all, she's a strong - willed character and won't let her parents' opinions control her completely.
Archive of Our Own (AO3) is a great place to start. It has a vast collection of fanfictions, and you can easily search for 'Ron kisses Harry' there.
Another way Severus could save Hermione is by using his knowledge of the Dark Arts in a positive way. If she was hurt by a Dark spell from Ron (in the context of the fanfic), Severus might be able to counteract the spell's effects. He has extensive experience with Dark Arts spells, so he could figure out what spell Ron used and then use a counter - spell to reverse the damage.