|Also Known as||Sacrament|
|Physical and Vital Statistics|
|Manga||Volume 2 Chapter 6|
Sakura is a mysterious girl who gives Souta his powers while aboard the Premium Anberial. She later removes Mei's flag observing powers and related memories after Mei and Souta visit the alternate world.
She was the person who gave Souta the power to see the flag after he was defeated at chess. After he lost she told him that she will give him her powers and in return he must arrive at the truth of this world and after he arrives at the truth of this world she will come again and they will battle again. After that she disappeared.
She later on shows up, because she needed to erase Mei’s flag powers and memories relating to flags, saying that the truth of the world is something Souta must find out on his own.