I think I know why Kaguya didn't whant to marry him.
Rustle...Now, about your friend who taught you how to write, Kaguya....By coincidence, I've just now asked her for her hand in marriage.Siiip....But welcoming her as my wife is simply a matter of time.Rustle...Wha?I have yet to receive an answer,Then, if that moment finally arrives....I wanna pull his mustache!