Spicy smile was a special snack from Guizhou, mainly in the form of salad. Its characteristic was its rich spiciness and spicy taste, suitable for people who liked spicy food. The main ingredients of Spicy Smile included cucumbers, lotus root slices, dried tofu, konjac, and so on. After cooking, he added the secret chili oil and spices for cold dressing. The spicy chili sauce was the exclusive secret recipe of every vendor, so the taste was different for each vendor, but it was guaranteed to be spicy and sour. Spicy laughter could be found in the streets and alleys of Guizhou. It was an unforgettable delicacy.
Toga could be an ally. Since she has her own complex relationship with the idea of heroes and villains, she might find Deku's transformation interesting. She could provide some of her unique skills, like shape - shifting, to help Deku in his villainous plans. Additionally, Twice might also join them because of his loyalty to Toga and his own sense of being an outcast in the hero world.
In this fanfiction, Deku's character development could be quite complex. Going back in time, he may initially be overconfident because he thinks he knows what's going to happen. But as he realizes that changing the past has unforeseen consequences, he becomes more cautious. He also might develop a deeper understanding of his friends and their potential, as he gets to see them at an earlier stage. He could start mentoring some of them, which would in turn make him more responsible and mature as a character.
Naruto's outgoing and boisterous personality would make Deku more confident. He would probably be more upfront and less shy. Naruto's strong sense of justice would also intensify Deku's already existing desire to help others.
A cold smile and a hot haha referred to a kind of smile. A cold smile and a hot haha were two completely different kinds of smiles. A sneer was a kind of smile with contempt, sarcasm, helplessness, and anger. It was usually a sign of disapproval and disdain towards other people's views. On the other hand, Rehaha was a happy and sincere smile. Sneering Hot Haha was to cover up the sneer with Hot Haha, making the smile seem fake and artificial, making people feel unnatural. This kind of smile was often used to hide one's true feelings or thoughts.
The main differences are in their expressions and some minor details of personality. In the manga, Deku might seem a bit more intense, while in the anime, he's sometimes presented a bit softer.
Todoroki can start by simply being there for Deku. Just sitting with him in silence when Deku doesn't feel like talking. It shows that he's not alone. Also, Todoroki can share his own struggles. Since he has his own complex family situation, he can relate to feeling down sometimes. This can make Deku feel that his problems are not unique and that it's okay to not be okay.
In some fanfictions, Bakugo can become more empathetic. For example, if he experiences a situation where he realizes the pain he's caused Deku over the years. His aggressive nature might soften as he starts to understand Deku better. Deku, on the other hand, could become more assertive. Instead of always being the timid one, he might stand up to Bakugo more firmly in fanfiction scenarios.