Well, it could be the way the author portrays his personality. For example, if they write about his kind - heartedness in a really sweet way. Maybe he's shown helping out a stray animal or being super friendly to fans in the fanfic.
One reason is Jackson Wang's huge popularity. Fans love him so much that they want to create and read fictional stories about him. His charm, talent, and good looks make him a great subject for fanfics.
You can try looking on fanfiction websites like Archive of Our Own (AO3). There are often many fan - created stories about Jackson Wang there. Just use the search function and type in 'Jackson Wang' to find cute fanfics.
Simple storylines often contribute to a cute Pokemon fanfic. For example, when a baby Pokemon is learning new things like how to use its powers for the first time. Also, when Pokemon form unlikely friendships, like a Bulbasaur and a Psyduck becoming best friends.
A Tobirama fanfic can be cute when it shows his softer side. For example, if it depicts him being kind to animals or children. Also, when he is in comical situations, like accidentally getting his clothes dirty while doing something simple. Another factor is his relationships with other characters. If the fic shows his friendship or a budding romance in a sweet and innocent way, it makes the fanfic cute.
The use of humor in a RWBY fanfic can make it cute. Like when the characters make silly jokes or get into comical situations. For instance, if Jaune tries to impress the girls with his non - existent cooking skills and ends up making a big mess. Additionally, when the fanfic explores the friendships in a positive and affectionate way, it gives a cute feeling. For example, the team supporting each other during a difficult mission.
Simple things like Naruto's child - like innocence can make a fanfic cute. For example, when he's excited about something as simple as a new type of ramen or when he's trying hard to make friends in a really earnest way.
A Johnlock fanfic can be considered cute when it focuses on the small, affectionate moments between Sherlock and John. For example, when they take care of each other when one is sick. Simple acts like Sherlock bringing John a warm blanket or John making Sherlock his favorite tea can make the fanfic really cute.
One factor that makes a Kakashi fanfic cute is when it focuses on his relationships. For example, if it shows his interactions with his students like Naruto, Sasuke, and Sakura in a more light - hearted and affectionate way. Maybe Kakashi giving them small gifts or just being there for them during a difficult time in a really sweet manner.
The character's personality traits being highlighted in an endearing way can make a Todoroki fanfic cute. For instance, Todoroki's initial shyness or his confusion about normal, everyday things can be really charming. If the fanfic shows him blushing when complimented or his awkward attempts at small talk, it adds to the cuteness factor.
A cute Tangled fanfic often has the main characters, Rapunzel and Flynn, in sweet, everyday situations. For example, just them sharing a simple meal together or taking a walk in the forest. It's also cute when Rapunzel uses her long hair in creative ways to solve small problems, like using it to reach a high - up fruit for Flynn.