One common theme is possessiveness. Since Todoroki is yandere, he often wants to keep Deku all to himself. Another theme is the struggle between Deku's own agency and Todoroki's overbearing love. For example, Deku might want to pursue his hero career and have other friends, but Todoroki's yandere nature tries to limit that. Also, there's the theme of secrecy. Todoroki may try to hide his yandere tendencies from Deku and others at first.
Sure. There's a fic called 'Yandere Shoto's Desire'. It shows how Todoroki, with his yandere nature, would go to great lengths to protect Deku from any perceived threats, even if those threats are just Deku's other friends. It really delves into the darker side of his love for Deku. Also, 'Dark Love of Todoroki' is a fic that has Todoroki's yandere side emerging slowly as he falls deeper in love with Deku, leading to some very interesting and somewhat disturbing situations.
The 'Villain Todoroki x Deku' fanfiction might also focus on power dynamics. Since both characters have strong quirks, how they use or misuse their powers in relation to each other can be fascinating. For example, Todoroki's ice and fire powers could be used in more menacing ways as a villain, and Deku would have to find new strategies to counter him while still trying to save him from his villainous ways.
Well, in such a fanfiction, it often explores a different side of Deku being a villain and his relationship with Todoroki. It could be about how their dynamic changes from the original story. Maybe Deku as a villain has different motives and goals that somehow involve Todoroki, like trying to use Todoroki's power for his own evil plans or trying to turn Todoroki to his side.
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.
A 'villain deku x villain todoroki fanfiction' might focus on their backstories that led them to become villains. It could be that they were both wronged by the hero system in some way. Deku might have been rejected too many times or faced unfair treatment, and Todoroki could have some family - related issues that pushed him to the dark side. The story could then show how they form an alliance and start their villainous journey together.
There's also 'Growth Together'. This fanfic shows how Deku and Todoroki support each other during tough times at UA. They face challenges not only from villains but also from within the school. Their relationship develops as they help each other overcome these obstacles.
The appeal of 'Villain Todoroki x Deku' fanfiction lies in the contrast between the two characters. Deku is the epitome of a hero, while a villain Todoroki goes against his original heroic - inclined nature. This contrast creates a lot of tension and potential for interesting storylines.
Common themes include the exploration of their individual insecurities. For female deku, it might be about not being strong enough at first, and for todoroki, his family issues. As they come together, they help each other deal with these. Also, the theme of finding a true connection in a world full of chaos is often there. Their relationship becomes a sort of haven in the midst of all the hero - related chaos. There's also the theme of acceptance, accepting each other's flaws and strengths.
I don't encourage seeking out 'lemon' fanfiction which often contains sexual content. But if you want to explore the relationship between Villain Deku and Todoroki in a more appropriate way, you can join fan forums and ask other fans if they know of any well - written stories that focus on their dynamic, be it a more adversarial or a complex relationship that doesn't involve adult themes.