This is a story i quickly came up with and thought it would be cute to turn into a fanfic. I ship Izuku and Katsuki more than anything so this mainly deals with them. Hopefully nothings too confusing and you enjoy!
Long ago, the world that people lived in was pretty simple. People went to work, took care of there families, and lived out their best lives. Everything in life would be grand, as long as people did not forget to do one thing and that was worship their gods.
The gods were people who lived high above them, and took care of there every need as long as they were respectful and good. If you promised not to let fame get to your head, the god of music would bless you. If you prayed and believed hard enough, the goddess of medicine would heal the sick. If thieves were to appear and rob, the god of behavior would punish the out of line and return what's been stolen.
All the gods basically look out for mortals and take good care of them, as long as they take care of the earth. Once in a blue moon, gods will walk on earth as there spirit animals or creatures, but sometimes it can be risky seeing that people could spot them.
All the gods lived above the world, loved their lives and protecting mortals. The leader and queen of the gods, mitsuki, made life simple and fair for them and as long as every god followed the rules, there would be no problems.
But unfortunately, not every god was able to follow the rules. The god of strength, toshinori had fallen deep in love with a mortal by the name of inko and needed to be with her. He had already broken one of mitsuki's rules, which was not to interact with mortals, but she was completely unaware that he had broke another one. Toshinori had secretly had a child with inko. He wasn't sure how mitsuki would react to such a huge change in history, would she banish him from the gods kingdom, or would she banish his son from life itself. He couldn't take a risk, so he left his love to raise there child on earth and he made her promise not to tell anyone about anything, or they both could be in danger. Inko promised to raise there son as a normal mortal even though she knew that wouldn't be so easy.
When toshinori had apologized for the first rule he had broke, mitsuki forgave him seeing they were really good friends. However, her problems did not fade away. Years later, her own son katsuki bakugo was showing some signs that he wasn't going to be fit to be the next leader. Not only was bakugo stubborn but he was confused with what he wanted in life, and it bothered him. Even though bakugo was very young, she could tell he was different from other gods and that he was going to be a handful when he was older.
Mitsuki knew her son was something else, but she could've never seen the change he and a certain someone was about to bring between the gods and the mortal world.