I don't think there will be any, since they're high schooler it would be problematic. Maybe in some extras when they show them in college/active life, but even then the author might keep it very implicit and not excplicitely show anything
I'm not too sure about that considering the author's/illustrators past work. Not to mention if the author really cared about showing sexy time between two high schoolers being inappropriate or problematic, they wouldn't have shown such intimate kissing.
However, for a separate or similar reason I also don't think the author will show them doing the deed.
I Just KNOW the eventual sex scenes are gonna go crazy