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.
The characters in Andou Hiroyuki's visual novels are usually very well - developed. Each character has their own personality, backstory, and goals. This makes them feel like real people rather than just fictional characters. For instance, a character might start off as shy but gradually become more confident as the story progresses. And the relationships between the characters are complex and multi - faceted, adding more depth to the overall story.
As I don't really know his works specifically, but in general, light novels often have simple and easy - to - read language. So perhaps Hiroyuki Hiro's light novels also have this feature, which makes them accessible to a wide range of readers.