I'm not sure exactly what this visual novel is about as I haven't played it. But 'gakuen' might refer to school, so perhaps it has a school - related story.
Well, without more specific information, it's hard to say exactly. But generally, in Japanese PC visual novels, the title 'gakuen de jikan yo tomare' might imply a story that takes place within a school environment. Maybe there are some supernatural elements like time - stopping involved. It could be about a character's journey within the school where they have the ability to stop time and how that affects the story, relationships, and the overall plot of the visual novel.
The Highschool DxD manga has indeed finished. It wrapped up after completing all the planned story arcs and providing a satisfying conclusion for the readers.
I'm not a fan of online novels. I'm just a person who likes to read novels. As for whether Blazing Teens will have a sequel, I can't give an accurate answer. It seems that there is no official announcement that there will be a sequel to this work, so I can't provide any information about it. If you want to know more about Blazing Teens: The Legend Reappears, you should go to the relevant novel websites or social media platforms to search.
The settings in misdaad en thrillerstrips en graphic novels are diverse. It could be a big city filled with skyscrapers and seedy underworlds, like in many modern - day crime - themed graphic novels. Or it could be a small, seemingly idyllic town where the misdaad lurks beneath the surface. The settings not only provide a backdrop for the story but also contribute to the overall atmosphere. For instance, a fog - covered, old - fashioned town can add an element of spookiness to the misdaad that is taking place.