One possible plot could be that the BTS members notice a hurt staff member backstage during a concert. They then stop what they're doing to help the staff, showing their kind and caring nature. For example, they might call for medical help or offer words of comfort.
I'm not sure of specific 'bts meets hurt staff fanfiction' stories off - hand. You could try searching on fanfiction websites like Archive of Our Own. They have a vast collection of BTS - related fanfictions and you might be able to find the ones that match this theme there.
Well, many BTS JK hurt fanfictions also have a plot where JK's hurt is a catalyst for character development. For instance, if he gets injured, he might have to take a break from activities. During this time, he could learn more about himself, his relationships with the other members, and his passion for music. This kind of plot often shows JK growing stronger and more resilient in the face of adversity. It also gives fans a chance to see different sides of JK and how he copes with difficult situations.
One common theme is self - discovery. The fangirl, who is initially hurting, often discovers new aspects of herself through her interactions with BTS. For example, she might find out that she is stronger than she thought.
One possible plotline could be that the 2013 BTS is transported to 2021 and they're shocked by all the changes. They meet their future selves and at first don't believe it's really them. Then they start learning about all the things they've achieved over the years.
It could go either way. The 'hurt reader' might be scared out of their wits when they encounter the 'killer' character. But, if it's a well - written fanfiction, there could be a slow - building relationship. The 'killer' might start to show a softer side, and the reader could begin to trust them. Maybe they end up on an adventure together, with the 'killer' using their skills to keep the reader safe from other threats in the BTS - themed universe.
A common element is the contrast between the vulnerable girl and the strong, 'killer' - like BTS member. The girl is usually in a state of distress, whether it's physical or emotional. Another element is the development of their relationship. It often starts with some sort of encounter, and then they gradually get to know each other. The BTS member may use their charm or power to protect the girl from whatever is 'hurting' her.
One common theme is probably the healing process. Since there's the 'hurt y n' part, often the BTS members will be involved in helping the character heal from whatever has hurt them.
In some plotlines, the hurt child could be in a hospital where BTS is visiting for a charity event. They notice the child is withdrawn and sad. BTS members start to interact with the child, sharing stories, singing, and gradually breaking down the child's walls. The story could then follow how the child recovers both physically and emotionally with BTS as a positive influence, and how their relationship develops over time.
There could be a theme of growth and learning. Maybe through the encounter with the hurt kid, the BTS members learn something about themselves or about the importance of helping others. Also, the theme of hope might be present. Their presence and actions could bring hope to the kid who is in a difficult situation.
One possible plot could be that Natsu gets hurt during a battle with a powerful dark mage. His friends then have to find a way to heal him while also dealing with the threat of the mage still being around. Maybe they search for a rare magical herb or seek help from a reclusive healer.