Scarlet Standard

The Scarlet Standard (紅い標準) is one of the red flags flown by women in Shintoist tradition. It was historically used by Remilia and Flandre Scarlet in the 17th-18th centuries and have been passed onto their descendants. The flag today has been mostly associated with communism and left-wing extremism since the mid-1970s. A variant of the flag is commonly used as the flag of the Shintoist Province and Scarlet Devil of Team Crimson.

Communist Scarlet Standard
The tradition of using a red flag with a yellow outline of Flandre Scarlet has been inscribed as a military ensign, which was adopted by Shintoist Province and Scarlet Devil of Minecraftia in the late 1970s, followed by the Shintoist Province and Scarlet Devil of Team Crimson in the late 1990s.

These flags have appeared on websites that use the flag as early as 1999. Even though the flag had no historical inscription, this variant has often been called the Scarlet Devil Flag (紅悪魔旗). Some western observers have dubbed it the red flag of Flandre.

SPASDOT variant
The variant used by the Shintoist Province and Scarlet Devil of Team Crimson depicts Flandre in the exact same pose as the box art of Castlevania: Dracula X, along with a box that contains the group's name in both English and Japanese.

In April of 2008, Queen Konata and her prime minister enacted the Crimsonite Removal Act of 2008, which would ban the flag from being displayed and would be considered a federal offense. Such offenses could result in a fine and/or a six-month prison sentence.