Well, in Miitopia, the full story involves creating Mii characters. These Mii characters embark on an adventure through various lands. They face off against different enemies and challenges. There are dungeons to explore and bosses to defeat. The story has elements of humor and charm as the unique Mii characters interact with each other and the world around them.
One key element is the Mii characters themselves. Their personalities and relationships matter. Another is the different regions they travel through. Each region has its own challenges. Also, the enemies they face are important. They range from small critters to big bosses.
I don't have the exact name of the person who created the Omori manga at hand. It could be worth doing a search on manga databases or asking fellow manga enthusiasts for the answer.
Omori is purely fictional. The story and characters were imagined by the creators, not drawn from real-life events. It offers a fantastical and imaginative experience for players.
At the moment, there's no definite date for the Omori manga release. But you can follow the official social media accounts or manga forums for any potential news or leaks.