User blog comment:Inept Wiki User/Cosmos in the Lostbelt: Post-Prologue, Pre-Anastasia Information & Speculation/@comment-4802891-20180402184851

"New" speculation I have come across on Beast's Lair: Akuta Hinako is Consort Yu, comcubine of Xiang Yu, or might be related to her in some fashion : her name, when written entirely in kanji and rearraged that way [ 雛芥子 ] means "field poppy", which is the flower associated to Consort Yu.

Hinako being from the Botany Faculty of the Clock Tower makes it clearer this name thing isn't just a coincidence. Also, she was happy to be the Master designated for the Rider class. Xiang Yu himself was a fierce general who had (in romance at least) two things very important to him : his wife Yu, and his horse Zhui. It makes him the perfect candidate for Hinako's Servant if the other part of the theory works.

It was mentioned on Beast's Lair long before the class of the Chinese Servant was revealed. At the time, they believed it was going to be a Rider, and since Xiang Yu is sometimes represented with 2 swords, it would have been a viable option... It doesn't rule out the man as Hinako's Servant (although he SHOULD be alive at the time of this Lostbelt), but he is probably not the Saber.