In the manga, Deku stays at UA. His journey is centered around his experiences and development within the institution. There are no plot points where he leaves UA permanently.
Deku remains a part of UA in the manga. His journey and growth are centered around the institution and its associated challenges and opportunities. There's no indication of him leaving.
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.
Maybe in the 'manga deku goes back in time fanfiction', Deku goes back to the time before he got his quirk. He then tries to understand the origin of quirks better, using his knowledge from the future. This could lead to him developing his quirk in a completely different way, perhaps even a more powerful way. He might also use this time - travel opportunity to befriend some characters who he didn't have a chance to in the original timeline.
Well, one interesting plot point could be Deku using his knowledge of future events to prevent certain tragedies. For example, he might stop a major villain attack before it even starts, saving many lives. Another could be his interactions with past versions of his friends and how he has to be careful not to change things too much.
Well, Naruto would probably shock everyone with his ninja skills. He could show off his shadow clone jutsu, which would be really useful in combat training at UA. His determination and never - give - up attitude would also inspire the students there.
Well, in this type of fanfic, it may start with Deku and Uraraka realizing their feelings for each other which had been budding during their time at UA. The story could then show how they start to date secretly, trying to balance their hero training and their new relationship. There might be cute moments like them sharing their dreams and fears, and also some tense moments when they face villains together and have to protect each other, which in turn strengthens their bond of love.
In addition to the main characters, there could be some minor characters from the manga. For instance, the teachers at UA like Aizawa. Aizawa might notice that something is different about Deku and start to investigate. There could also be villains from the past that Deku has to face again, but this time with his future knowledge. Characters like Stain could be interesting to include as Deku might try to change the way he dealt with Stain in the original timeline.
If Percy Jackson goes to UA, there would be a huge culture clash at first. The UA students are used to a very structured hero training system, while Percy is more of a 'go with the flow' kind of demigod. But over time, he could teach them about improvisation in battle and they could teach him about teamwork in a more organized way. He might also introduce the concept of Greek mythology to the UA world, which could open up new ways of thinking about powers and abilities.
You can try searching for it directly on Wattpad. Use the search bar and type in the exact title 'deku and uraraka love after ua wattpad fanfic'. If it's a popular fanfic, it should show up in the search results.