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.
The 'deku texting story' could potentially revolve around Deku's internal thoughts and struggles as he communicates with others via text. Since Deku is often seen as a determined and kind - hearted character, the texting story might showcase his efforts to support his friends, like when they are facing difficulties in their hero studies. It could also depict how he uses texting to get advice from his mentors, such as All Might. Through these text exchanges, we might get a deeper understanding of Deku's character growth and his relationships in the story world.
Well, obviously Deku in two forms - the younger and the older version are the main characters. The younger Deku is the one who is still growing and learning, while the older Deku has more experience.
In the 'deku texting story', Deku is the central figure. However, considering his world in My Hero Academia, other characters who could play major roles in the texting story are numerous. His friends from Class 1 - A would be prime candidates. They are constantly interacting with Deku in the original series, so it makes sense for them to be in the texting story. Additionally, any heroes or sidekicks that Deku looks up to or works with might also be main characters. Their wisdom and experience could be shared through texting, and they could offer guidance to Deku during his journey to become a great hero.
Another plot might involve the older Deku being from an alternate timeline. He shows the younger Deku different ways he could have developed his skills and relationships, which makes the younger Deku reevaluate his own path as a hero.
As of now, Deku is very much alive in the manga. The plot hasn't reached a point where he meets such a fate. Usually, main characters like Deku have significant story arcs and aren't easily killed off.
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.
Bakugou could use his words. He might tell Deku that he believes in him. For example, he could say 'Deku, you may be a nerd but you're a strong nerd.' It's a backhanded compliment but it shows he has faith in Deku.