[It is so much easier to assume it's his height, he'll gladly continue working under that assumption. Like, she's not wrong, but let him pretend he's not awkwardly wallflowering over here.]

It's definitely an interesting tradition... Have you heard of "hand-fasting"?

[Would you like to hear this trivia, Haru? It's great, he read it in a book. He takes the end of the ribbon obligingly.]

Well, this one has a tree involved, but the purposes are similar.