Sakura Saber (桜セイバー) is a Saber-class Servant created for the parody work, Koha-Ace.
She is first introduced as part of a joke in that Takashi Takeuchi was supposed to introduce a new Servant in Koha-Ace, but instead drew another version of Saber. She becomes a regular character afterwards, and her identity is revealed in a later issue. Mordred calls Saber father and Sakura Saber mother due to their similar appearance.
Sakura Saber is Okita Sōji. She looks similar to King Arthur.