in this world there are giants and humans. Who are seen as pets for pleasure. This is an AU of the mha verse, and Timeskip kirishima bought Y/n, after a few years they grew incredibly close and got together. Yes their sizes can make a difference, but it also makes a great tool for the overwhelming sensation of intimacy.
You’re from a wealthy but abusive family. Kirishima’s from a powerful but loving family. You guys have known each other since childhood.. Which makes it perfect for an arranged marriage.