"Sorry, your question went a bit unnoticed."
All secondary characters, if you like them and want more scenes with them, you can, and they won't have scenes with other characters. If, at some point, there are decisions to be made, an interactive menu will appear for the player to make choices. Choosing one of the alternatives can change the future path, meaning no surprise scenes. "And in the upcoming updates, there will also be a tab in the guide for all the 'Main' characters, which includes the characters from the 'Family,' 'School,' and 'Club' tabs, and another for 'Side'