I'm not entirely sure as 'aoi bungaku kandata' is rather specific. It could be a fanfic based on a particular work of Japanese literature perhaps. Maybe it's related to a certain story, character, or theme within that literary work.
Todo's appearances in the JJK manga are scattered. It depends on the specific storylines and conflicts. Sometimes he's in the foreground, and other times he makes cameos to add to the overall narrative.
First, you need to have a good story idea. Outline the plot, characters, and their relationships. Then, you can start creating the art for the visual part. Use software like Ren'Py which is popular for making visual novels.
A 'todo today visual novel' could potentially revolve around a protagonist's day - to - day activities. For example, it may show their morning routine, things they need to accomplish at work or school, and how they interact with other characters during these tasks. It might also include elements of decision - making, where the choices the player makes regarding the character's 'todo today' list can affect the outcome of the story.