The fanfiction could be a source of inspiration for her. Fresh Sans is often depicted as a cool and positive character. Meeting him in the story could make her believe in the possibility of something good even in her difficult situation. It could give her the motivation to keep going, to be more positive about her future, and to face her cancer with more optimism.
In the fanfiction, Fresh Sans could have some special powers that he uses to help the girl. Maybe he can heal her pain temporarily or give her the courage to face her treatments. It could also explore the relationship between them, whether it's a friendship or something more. And perhaps through their interactions, the girl realizes that she has more to live for and starts to fight her cancer more actively.
One way is to focus on the emotional journey. The reader's fear and despair due to cancer can be contrasted with Fresh Sans' carefree and positive attitude. Their meetings could be like a light in the darkness for the reader.
Well, it could be about the reader, who is battling cancer, finding solace in the world of Fresh Sans. Maybe Fresh Sans uses his unique powers to bring some joy to the reader during their tough time. For example, he could create colorful illusions to distract the reader from the pain.
It can have a positive impact. The fanfiction might show her the diverse and positive aspects of the BTS fandom that she was unaware of. For example, if the fanfiction portrays fans coming together to support a good cause inspired by BTS, it could make her see the fandom in a new light.
One common theme could be the contrast between the sick reader's vulnerability and Fresh Sans's more energetic or carefree nature. It might explore how the two interact in that state of the reader being sick.
One common theme could be hope. Fresh Sans might be portrayed as a source of hope for the suicidal reader, guiding them towards a better state of mind. Another theme could be self - discovery, as the reader might start to understand themselves better through their interactions with Fresh Sans.
One reason could be the unique character of Fresh Sans. His vibrant and somewhat eccentric personality can lead to really interesting storylines in fanfiction. The 'reader meets' aspect also adds a personal touch, allowing fans to insert themselves into the Undertale universe and interact with this beloved character.
Naruto's emotional sensing might actually bring Hinata out of her shell. He could sense when she's holding back in a social situation or when she wants to contribute more but is too shy. So he encourages her, and this changes Hinata's character development in the fanfiction. She could become more assertive and confident, all because Naruto can sense her inner emotions.
The impact could be huge. It could change the power dynamics in the story. As a girl, Naruto might be underestimated by some opponents at first, giving her an advantage in battles. It could also lead to changes in the way the plot unfolds. For example, some missions might be approached differently due to her new identity.
I'm not sure about specific 'Suicidal Reader Meets Fresh Sans' fanfictions off the top of my head. But you can try searching on popular fanfiction websites like Archive of Our Own (AO3) or FanFiction.net. Just type in the exact title in the search bar, and you might find some interesting reads.