It could be that Erza scolds Natsu too harshly for something he did wrong. Natsu, who might be more sensitive than he seems, could end up crying from the severity of her words.
I'm not sure of specific 'erza makes natsu cry fanfiction' stories off the top of my head. You could try searching on fanfiction websites like FanFiction.net or Archive of Our Own. There are usually tags and search functions that can help you find such stories.
In many fanfictions, Natsu and Erza often have a complex relationship. Natsu is usually depicted as a bold and passionate character, while Erza is strong - willed. Their relationship might start from comradeship within the guild. Some fanfictions may explore how they gradually develop deeper feelings for each other, like through shared adventures and facing challenges together. This can lead to a mutual understanding and respect that could potentially turn into a romantic relationship.
In fanfiction, their relationship can be explored in different ways. They are both very powerful wizards in Fairy Tail. So, when they team up in a story, their combined strength can be used in creative ways against strong enemies. Also, there's the underlying friendship and respect they have for each other in the original series, and fanfiction can expand on that. It could be a story where Natsu is the only one who can reach Erza when she's in a dark place, or vice versa.
The popularity of Natsu, Erza and Lucy fanfiction lies in the characters themselves. Natsu is hot - headed and powerful, Erza is strong and strict, and Lucy is kind and intelligent. Their different personalities create interesting dynamics.
The way it fits into the 'Fairy Tail' universe. If the fanfiction can incorporate the magic, the guild's dynamics, and the overall world - building of 'Fairy Tail' while still focusing on Natsu and Erza's relationship, it becomes really interesting. For example, a fanfiction where the kiss is a result of a magical bond or a quest that they undertake together within the Fairy Tail world.
The appeal of Natsu and Erza fanfiction lies in the characters themselves. Natsu is a fun - loving and powerful character, while Erza is strong and authoritative. Their interactions are always full of potential. For instance, in a fanfiction, Natsu might pull a prank on Erza, leading to an amusing chase or a scolding from Erza that still has an undertone of affection.
It could also show the complexity of their relationship. Maybe Erza's actions are out of her own insecurities or fears, and Natsu getting hurt is a consequence of her not being able to handle those emotions properly. This would mean that their relationship is not just about friendship or comradeship, but also about understanding each other's inner turmoil.
There's also a possibility that it causes a rift in the guild. Other members might take sides. Some might side with Erza, believing she had a good reason, while others might side with Natsu, feeling that Erza was too harsh. This could create a lot of tension within the Fairy Tail guild and further complicate the relationship between Erza and Natsu.
Their personalities. Natsu is the hot - headed and impulsive one, always ready to jump into action. Erza is the strict and disciplined warrior, bringing order and strategy. Mirajane is the more laid - back but still very powerful one. Together, they create a great balance.