Title: Let's do a handshake event!

Physostegia: Let's do a flower knight
Physostegia: handshake event!!
Physostegia: And not just any handshake event! We'll also be selling sweets made from recipes devised by our flower knights and cosmetic products too!
Solidaster: I see! Isn't that wonderful~!
Solidaster: In that case, since preparing history quizzes is my specialty, I will be asking simple questions before shaking hands.
Physostegia: A quiz, huh... Good, it's shows your individuality!
Solidaster: Recorded in Banana Ocean's history book, volume 57, page 68, what's the name of the historical structure and the full name of its discoverer~?
<Solidaster: If you guess, you can shake my hand~>
Physostegia: The difficulty level is too high!!