The 'bakudeku bakugou gets a spanking fanfic' could potentially be a story that plays with power dynamics. Bakugou is a very strong - willed character. So getting spanked could be a way to show his vulnerability. It could also be related to a bet or a dare in the fanfic's plot. Maybe Deku has something to do with it, either as the one who administers the spanking or as a witness to an event that leads to Bakugou getting spanked. But again, this is all speculation without actually reading the fanfic.
Well, the most common places to look for fanfics are AO3 and FanFiction.net. For the 'bakudeku bakugou gets a spanking fanfic', you should first go to AO3. Use the advanced search options if the simple search doesn't yield results. You can filter by tags related to the characters, like 'Bakugou' and 'Deku'. If you don't find it there, then head over to FanFiction.net. Sometimes, fanfics are exclusive to one platform or just easier to find on one over the other.
The relationship could start with hatred. Bakugou may initially be enraged that Deku has become a villain. But as time passes, he starts to see the reasons behind Deku's transformation, which could lead to a more complex relationship.
I'm sorry, but I can't recommend specific fanfics with such content as it may not be suitable or may violate certain rules. However, you can try searching on popular fanfic platforms like Archive of Our Own and use the appropriate tags to find what you're looking for.
If you want to write this type of bakudeku fanfic, consider the context of the My Hero Academia universe. The characters have their own values and powers. You can't just throw in the bottom Bakugou and edging concepts without considering how they fit into the world. Also, think about the pacing of the story. The edging aspect might require a slower build - up to create the right amount of tension. And always keep in mind the target audience. If it's for a more mature audience, you still need to handle the content with care and respect for the source material and the characters.
One concept could be that Villain Deku manages to manipulate Bakugou into joining his side. Maybe he plays on Bakugou's insecurities or his desire for power. Another could be a world where they are both villains from the start and they form a power - hungry duo, causing chaos everywhere. A third concept might be that Villain Deku kidnaps Bakugou as part of a grand scheme to get back at the hero society that they both feel has wronged them in some way.
It could start with Deku taunting Bakugou. As a villain, Deku would have a new - found confidence and would use it to get under Bakugou's skin. He might leave cryptic messages for Bakugou, hinting at their past and how Bakugou used to bully him. This would make Bakugou angry but also curious about what Deku has become.
Well, AO3 is definitely a great place to start. It has a tagging system that makes it easy to find the specific type of fanfic you're looking for. When you search for 'villain deku x bakugou', you can also filter the results by things like rating, word count, and completion status. Fanfiction.net also has a decent selection. However, you need to be a bit more careful there as the quality control isn't as strict as on AO3. You could also look into Tumblr. There are a lot of My Hero Academia fans on Tumblr who might post about or recommend good villain deku x bakugou fanfics. Some of them might even have their own fanfic blogs where they share their work.
A possible plot is a power struggle between them. Since Deku has turned villain, he might see Bakugou as a threat to his plans. Bakugou, on the other hand, wants to bring Deku back to the light. This creates a constant back - and - forth of battles, both physical and psychological, as they try to outwit each other.
Villain Deku would likely be very manipulative towards Fem Bakugou. He might try to use her anger and pride against her. For example, he could taunt her about how the hero system has failed her in some ways, making her question her loyalty. Bakugou, on the other hand, would probably respond with aggression at first. She would not take kindly to Deku's villainous ways and would try to attack him. But as she realizes Deku has some valid points about the hero system, she might start to listen more and their interactions could become more of a debate rather than just physical combat.