The idea of Natsu being the strongest dragon slayer in fanfiction is appealing because it allows for exploration of different storylines. His power can change the dynamics of the world he exists in. It can lead to him taking on more dangerous foes, forming new alliances, or even changing the way magic is perceived in that fictional universe. The potential for grand adventures and the display of his indomitable spirit are what draw people to these types of fanfictions.
The main appeal is seeing Natsu's character at his most powerful. Fans love to see their favorite character in a position of extreme strength and dominance.
In 'natsu strongest dragon slayer fanfiction', it often involves creative interpretations of his powers. For example, the author might give him new abilities related to his dragon slayer magic. This novelty and the expansion of his capabilities make it exciting. Also, the fanfictions usually have epic battles where Natsu showcases his might, which is always thrilling for readers. The character development and how Natsu overcomes various challenges to prove his strength are also big draws.