Imagine them just having implied shagging. I wouldn't even mind. This manga has such a streak of good pacing, it would work.
It such a delight seeing them grow closer and closer.
I hope to see them have a family of their own one day.
@djamel90 Depends on how they were raised and their personalities. Like if you're going to compare two shy well-mannered kids from Conservative Japan to a pair of black kids from Chicago obviously one of these groups is going to engage in pre-marital sex more than the other. Plus it's more fitting for both the tone of the manga and their characters to consummate their relationship on their wedding day.