Replying...
Intro. Yamikumo, Deku's prototype in My Hero Academy, had a very different personality from the final version that would be Izuku. Instead of being a more open and determined boy like Deku, Yamikumo was described as a darker and more introspective character. He would have a more cynical approach to heroism, dealing with feelings of doubt and a less idealist view of the heroes' world, he would be a more melancholy and full conflict character, reflecting heavier themes (according to what I researched BTW👎)

Yemicumo

@Yuu