Thank you so much! ;w; Haha, I bet Tom would be willing to go head to head with you!
Yes, the side characters will have their own part to play and you will get varying subplots depending on which route you take! You might make friends or lose friends depending on your choices. They didn't get much time to shine during the demo since there were so many characters to introduce, but they will get their screentime in the full game. :)